The 2 year ADN, getting ICU experience (even part time), while obtaining an accelerated BSN sounds like a good plan. But then again, knocking out the BSN all in one shot is a great plan too. Remember, you can apply to most anesthesia schools before you have finished your 1 year experience, AS LONG as you will complete 1 year by the time school starts. (clarify with your intended program before hand)It seems like time is your only factor, but it should only be a year or two difference, taking into consideration wait lists for RN programs, and of course CRNA programs. Can't really go wrong either way.

Good Luck!