There's no way to update MPLAB 8.92 to support the Q10, so MPLABX is the only choice if you want to use the debugger.

MPLABX 5.35 was the last version to support MPASM, so that's what I would use.
Integrating PBP and MPLABX is a mixed bag, but worst-case you can always build using MCS/PBP and then import the .COF file into MPLABX as a prebuilt project.
That's what I've done in the past when I can't get the plugin to work.

Debugging and PBP isn't that great.