Fills on Iron Condors

Hey guys is it realistic to assume i could get filled at the mid or slightly below on an iron condor?

 

Filling at the mid in general is very optimistic, also fills greatly depends on how liquid the market is.
I've found more realistically you can get filled 1/3 of the way between the bid/ask, though I usually try for the mid first in case I get lucky.

 

Yes, but you increase your chances when the underlying is liquid.