I will have to see if I can find a booster 486 chip like that for myself on eBay. I have a 486slc GG around here somewhere, with a nice VGA card combined with IDE controller and floppy controller I think, plus I have an old Soundblaster. Can't remember my exact setup that I used to have in my first A2000 with my Vector 030 accellerator. That A2000 was maxed out in every way I could think of at the time. Now it has a recent new lease on life with an 060 installed.
Forget DOOM, I would rather play Unlimited Adventures, Forgotten Realms. It was the last in the line of SSI AD&D games, actually it was a game creator in that style and it never got ported to the Amiga, which was a shame with all the talented Amiga users and programmers that could have done great game designs with that construction kit.
I have it for MSDOS and there is actually still an active group that creates games with it, very fun.
It will be fun to have it running on the Amiga's Bridgeboard, if not an actual port of the program for the Amiga (a dream of mine that will probably never happen).