dude I got the same stats as you and probably 90% of my wardrobe (casual and formal) has passed through the tailor at some point so I speak from experience... there's only so much you can do with things like shirts and pants. Shirts are generally easy to taper the body and sleeves so I used to just buy it if the neck fit and I liked the fabric... generally that works out fine. As for pants, you can take in or let out the waist about 1 inch max, after that it gets messed up. As for the rise, for casual I go with 9.5 and formal 10.5, but that's just me. I've played with shortening rises and I'd say 1 inch is about the max to go otherwise the whole fit goes funky. I've taped legs down by a good 1.5 inches on the diameter so taht's no problem (I do 11 thigh, 8.5 knee, 7.5 hem for most wool and cotton dress pants and then 10.5, 8, 7 for casual like jeans or khakies). I tailor almost everything but I've learned now to stick with minor tweaks like a little slimming or tricks like moving buttons (cuffs and plackets) to get the right shape. on the particular pants you're looking at, I say avoid for now. search and try on everything because there's stuff out tehre that fits, no doubt. Eg Uniqlo has perfect slim shirts for like $30, hell it used to cost me $25 just to tailor a shirt to make it fit. PS - go to a tailor, ie someone who actually makes suits, not a drycleaners or some alterationists like that.