Tyres: I use nobbly nics 2.25 and thats got room to spare. I dont have a minion to check.
Some other stuff that might be helpful:
– front mech : conventional, bottom pull works best. One mech I had had the adjustment screws hidden behind the stays and was inaccesible. I got so fed up I got a new one from Merlin. They have them: SLX m661 for £16.95 now. It’s got the screws at an angle and is a whole lot easier.
– The headset is integrated (I’m pretty sure but not positive thats the right term: the headset cups are part of the frame itself) and you need “campy style” headset bearings etc.
– Buy some spare brake cable clips. Halfords do a pack of 5 or so for a pound. The one just beside the brake caliper seems to get pulled / popped out by the suspension moving. Or better still – cable tie the brake cable firmly to the stay.