I did that once in my salad days. It was an amusing adventure but not much more than that.
@LeDodo is asking good questions. If it were me, I'd mix it up, some combination of social and fun time. Maybe: social lunch with one indy > early afternoon hour with an agency SP > MP to unwind > drinks or dinner with an indy > 2+ hours with ATF. In my experience, rattling off five SPs in a day becomes kind of a blur. I think it would be fun to meet a few different types of SPs--and cool to get to know a couple Indies. It might set you up for your next Montreal adventure.... Whatever you decide, have fun and report back!