Interesting hand! Thanks for posting it.
I might be repeating some previous thoughts but bit flows better for me if I present it as I’m thinking about it. I’ve listed each street with the HERO’s option, followed by my thoughts on it. Then I’ve set out other Options in order of the way I feel the hand should be played.
Preflop: Borderline call.
Reason #1
You have a limper in middle position and if MP1 3-bets then HERO’s Qd8d are downright ugly. If you thought about the playing style of MP1 before calling, well played! Otherwise, slow down next time and think that over.
Reason #2
It is the CO raising a limper, so his hand might be stronger then normal. I would have more incentive to call a BU isolation raise.
Flop: The board is scary! Straight draws, flush draws, high cards.
Hero’s Option: Bet, call raise, cap
First off, there was no 3-bet from the Hero, which as I discuss below is the reason for leading out. MP1 and CO both raised, with this happening the situation is unclear and I feel it’s best to call MP1’s 3-bet. MP1 could be messing with a funky flush/gutshot (Ac9c) draw but it’s tough to say, more likely the three bet here means a straight, or trips.
The HERO caps the hand. This gives you no additional information, and in fact, muddy's future information on later streets. If I’m MP1 or CO, and not a maniac, that cap says our HERO has a straight or set. However, if you know they will think that, it will give more weight to future raises from them, and you can adjust accordingly for the rest of the hand. The key is to understand what that cap means to them.
Flop Option #1: Bet out with the intention of 3-betting.
You really want to make the draws pay to play. Betting out is great because it eliminates the risk of a checked round. This could be disastrous if a hand like AKo gets to stick around. The only downside is if everyone flat calls when a checkraise would have sucked an extra bet into the pot.
When you bet out it's because you expect the CO, our preflop raiser, to raise you back. This allows our HERO to 3-bet and force MP1 to make a decision for 2 bets cold. You actually don't mind losing him now because this pot has already gotten big, and you still have the CO on the hook. Alternatively, if you bet out and MP1 raises, it puts the two-bet cold call decision on the CO. Both good scenarios. The pot has already gotten big, you are very happy getting it heads up right now.
If someone responds to HERO’s 3-bet with a cap, or alternatively it comes 3-bet back from your lead out, play on but get very cautious on the turn.
Flop Option #2: Checkraise
The preflop aggressor, the CO, should bet this flop, so it looks like a prime spot to go for the checkraise. This gives you the ability to hit the MP1 with a 2-bet cold call. If someone three bets your checkraise it is borderline whether to cap or not. I would generally flat call and see how the turn plays out.
Turn: Checkraise or Bet-out
Hero's Option: Bet out, call a raise.
You showed immense strength on the flop. You betting out on this turn shows even more strength. MP1, our preflop 3-better raises. The CO cold calls. It really feels like someone has trips or a straight. Either MP1 has a straight or trips, or the CO has trips and is afraid of the straight so flat calls. Once you made the decision to bet out, I like the flat call of the raise.
Turn Option #1: Checkraise.
This is the best option because it allows you to make easier decisions on the river. It also allows you to win more bets when you’re ahead or improve on the river, or lose the same amount if you’re behind. This is an extremely important turn concept.
With both MP1 and CO raising on the flop it seems likely they will bet the turn. This gives you a chance to force someone to a 2-bet cold call decision with the big bets. Good chance to knock someone out again. If you don't get 3-bet, it's likely you have the best hand, and our HERO’s river decision is to bet out, and call a potential raise.
If you get 3-bet after checkraising this turn, after all this action, you are pretty much sure to be beat. The river decision after getting 3-bet is to check-call unless you improve.
In the unlikely event that this turn gets capped by the other two you can actually fold the river if you don’t improve. Unless they're maniacs of course.
Turn Option #2: Hero's Option
River: Two good options – Check-Call or bet out
Hero's Option: Checkraise.
You didn't get 3-bet which is promising, however what happens if you did? Definitely a set or straight, and you have to pay off when the pots this big. The checkraise just puts you in a bad position. If you think you have the best hand on the river - bet out! Don't get fancy on the river. This is a rule to live by.
Now, if you were planning to fold to a 3-bet, then I like this checkraise. However, that is an extremely high-level way to play poker, and I personally don't like the metagame issues it causes.
River Options: Bet out, or check call.
If you think you're best, bet, otherwise, check. This decision should be set up from the action on the turn.
Now, to answer your question. 
No, you aren't too aggressive. However, you do need to focus it, make sure you have a reason for making the aggressive moves that come so naturally. I see a lot of good things going on with your style. Keep it up, and work on fine tuning it!!
TaoButterfly
