Also if you plan on using a 110/74 bcd crank your inner chainring is limited to a 24t as they don't make 'em any smaller. If you want to go smaller you'll have to look into mountain cranks or much more expensive options(TA Zephyr -now discontinued, TA Carmina, NOS stuff, etc). You didn't say if you already have a crank or not(I'm assuming you don't) but the obvious bang for your buck(and availability) winner is the Sugino XD which I've seen offered in: 46/36/26, 46/36/24, and 48/36/24. The 22t small ring would be nice to have but is not all that much better than having the 24, IMO. If it's only chainstay to chainring clearance you're worried about why not get a 2-4mm longer BB(or just offset a Phil until the clearance is acceptable to you)?