Update: I finally found the trick to placing a room mic properly in my space.
For starters, I used the nicest condenser mic I have. I basically found that if I position it the same way as I would a boundary mic, the room mic now yields an acceptable capture. Took a while to figure that out. I place it low, almost touching the floor, (emulating a boundary mic) on a 45 degree angle in relation to the ceiling. So it's like the mic is in a room with a high ceiling lol. I put it almost in the center of the room, which is only like 6 feet in front of my 2 x 4/plywood drum riser.
I tried this setup in 3 other locations, even in the next room, and for now, this is the best placement. Until I find a better one. I only experimented with one mic too. It's never-ending lol. But very stimulating to me.
Finding optimal mic positions would be a crap ton easier if I had 2 other people....one to play the drums and one to move the different microphones around to try and locate sweet spots...while I listen with my eyes closed.
I'm going a little nuts trying to completely optimize what I have here...I put the legs of every stand I have on the recording kit on dense foam rubber, I even put foam rubber under the footpedal plate. It seems to quiet the natural resonances transmitted through the riser. I should probably lose the riser but I won't. I like storing my mic stands underneath.
The process as it is now, is playing and recording the drums, listening back, checking meters, adjusting gains, moving mics, playing and recording drums, listening back, checking meter, adjusting gains moving mics etc. Try that 10 times lol. It's mentally draining lol.
I recorded another drummer the other week, with the settings on the gear set for how I hit them...and the drums sounded totally different when he played them, and not in a good way. IOW, I would have to set gains for each individual player. Everyone's touch and individual volume balancing act is different. It's nuckin futs.
Since I got a better handle on the room mic thing, it doesn't seem that I should be needing any stinking boundary mics.
I appreciate all the comments though. I did learn some.