Unfortunately, nobody MAKES what you want, doc-z. Except Ketron. And those are older technology. No Audya module. No SA, no guitar modes, expensive, limited style library...

You need to consider either getting a proper arranger (you can always MIDI in a wood 88 if you have to play one of those) and do what you want with that. A much older, used module is going to frustrate you when you hear how much BETTER modern arrangers all sound (even the MOTL ones). Is bringing one more lightweight keyboard to a gig THAT much of a burden, especially how little more than the module some of them weigh?

You want live sounding drums, maybe a used E50 might fit the bill, or a new Korg PA700. Both of those can be had for less than a new Ketron module. If not, I'd still take a close look at that DR-880. I tried the Alesis SR-18 (had an SR-16 since they came out), and wasn't really that impressed...