Maybe like rank 3 at the most only until you get the dupe I'd rank 4 him.
I'm a huge fan of venom so personally I wouldn't but also I've never used voodoo so if you like him it's really up to you and what content you're trying to complete. Also your 5* luck is nowhere near garbage crossbones doc oc, and rogue are all solid champs.
My 5* is also not woke and he isn't going beyond Rank 2 until that changes.