even though the room is dead, you will still get ambiance. It will just be tighter and not have much reverb naturally. That would be a better candidate though for harder compression on them. I like to not compress the OH and compress the fuck out of the rooms just to get a parallel style compression between OH and AMB and since the OH will be louder the Rooms can be compressed to high fuck without the worry of having pumping cymbals. and compressed rooms will add the largeness of the reverberating sounds which will help give you this massive sound.
Get the 4033's as far back as you can and as high as you can pointing down towards the drums, and stick that c414 about 5 feet back about eye level with the toms, then run that mic either to a mic'd guitar amp, or an amp sim with a slight amount of distortion, render it and compress it to as desired.
The 3:1 rule is general. just keep the pair of mics about that distance, and dont' worry about how close the OHs are the the room mics too much, just make sure each pair are spaced apart of you are micing up with a split mic tecnhieuq and don;t worry about it if youa re using the xy pattern.
