First of all, forget about making a living, that's not the intention

intention is to find the lowest risk strategy. I would run out of time, playing 33,000 spins anyway
Also, I am curious which strategy side is less risky (note the word "LESS", not "NOT risky at all"):
a. 50/50 double betting
b. low chance of winning double betting (like putting on 6 numbers and then increasing the bet after 6 rounds and stuff like that)
c. high chance of winning double betting (what we're talking about now)
I wouldn't do it like this..
I would do:
1. 8 points - 13.51% (every 7.40th turn)
2. 32 points - 1.83% (every 54th turn)
3. 160 points - 0.24% (every 416th turn)
4. 800 points (or maybe 1600 points, I will explain later) - 0.031% (3225th turn)
Here I would stop.
The only thing is that I would need 2 wins in a row to make the money back every time, but since chance to win is 86.49%, there's a very high chance it will happen. If I would win one round (when winning back), but the 2nd round I would lose, then I would have to just go to the next double betting..
Might be on the 4th spin is not a good idea to split to two, since it's the last round, so if you lose here, you're kinda screwed, so another option is: 4. 1600 points.
p.s. - just for the record, IF i would play 33,000 times and lose on the 33,001th, that means I would make 33K by then, so it is NOT a huge gamble, but I wouldn't do such crazy bets, so forget it