Ok. First of all, get a Legendary Tones V2 Evo to add another gain stage to your 800. That should give you enough distortion to play mean rhythm without the need for a boost pedal. Then buy a Standard Boss SD-1 new or used, they are cheap and sound great with the 800. Engage pedal for addtional cut when soloing. Done!
Why do I know this? I have the 800, the HotMod V2 and the SD-1. It works like a charm.
@David Szabados does the HotMod and maybe he can chime in.
Check this out:
Hope that helps. Cheers!
Do you have any experience with the Soldano Hot Mod?
I actually have a guy in my town that could sell it to me