Thanks all !!
Just completed it ... wasn't "too" bad ... really ..
I finally decided on this team comp:
I used Ghost to clear the path to Collector ..
used 30 units on an atk boost, used some other stored boosts ...
1 revive (I messed up vs Old man Logan) and a few dozen lvl 1 and lvl 2 heals .. *shrug* .. had tons
Vs Collector went better than expected:
1 lvl 1 team revive (practice runs ... 3* wasp doesn't last very long vs collector .. LOL )
6x lvl 2 single revives ...
I got nowhere with Vision ... he was a dud for me .. *shrug*
Iceman did well initially, but once Collector was below 50% .. I switched to Ghost, and did very well with her.
Again .. thanks for the advice all!