I still have some of those Keepex and Gain Brains, great stuff in it's day. But I think most of us have stopped gating drums these days, certainly before recording them. Save the gates for mixdown if needed, where you can use as many instances of a SW gate as you like vs needing a bunch of hardware gates and then being stuck with the settings you used while tracking. In this case, gates aren't going to solve the room problem anyway.
As far as treating the room, it's true that measures like moving blankets won't solve everything, but they certainly can help with flutter echos and will be well worth experimenting with. There's no one right way to track drums, and varying degrees of room liveness are employed. Allow yourself a lot of time to experiment with room damping, to troubleshoot, to find and illiminate rattles and other annoyances, to move mics, etc.