[Closed] Prince Albert build - wheel/rim choice?

Finally getting around to building up my PA classic, and am almost ready to put in a huge parts order 😀

I've been trying to get my head around all the various factors in choosing a wheelset, and have decided on a ProII/Flow ex combination (Merlin) cos I'm a bit of an oaf, and quite heavy.

This might be a numpty question, but is there an issue running "narrower" tyres on Flows? Haven't chosen tyres yet, but I'm thinking of 2.1 or 2.2. I've not run tubeless before, so am wondering if that combination will result in certain death....