Welcome! And what do you mean moved away from DnD? I still have a blast with that game!
And our usual meets are VARF, MDRF, and the annual DOK events. I think only Sir Ed does Pennsic (besides the SCAdians among the order, that is).
So what year is your Mongol impression, and what region? I haven't seen much of those before. And if you wanted to multi-kit, a Gallowglass kit wouldn't be as expensive as a full knightly kit, if you want to take the Irish road.