Hi, slippyjim!
It's very important to understand how antes influence our decision. I will give you an example:
Blinds are 10/20/2(ante) and there are 6 players left.
That means there is 12 chips dead money on top of the blinds. 2/3 of ante goes to the BB and forms the true big blind. That means that 2/3 of 12 is 8. 8 we add t 20(BB) to form a true big blind of 28.
So, say you have 200 chips. It might look at first sight that u have 10bb, but you need to treat this spot as if you have 200:28-7.14bb, which makes a big difference, doesn't it
It's not extremely accurate, but it gives you a good idea of how you need to adjust when antes are in play.
That being said, if this situation happen, I will follow the chart that says: push for 7bb before antes. The problem with the antes chart is that it can greatly vary. F.e. if it's 4 players left, dead money from antes is just 8 chips and if it's 10 people, then it's 20 chips.
Hope that makes sense!