- quattros have platforms, but the eggbeatery bits will always stick out, so they'll never be flat. Good enough to get around the block, but don't count on being solid or being able to ride brakeless
- if you ever plan on walking more than 100 feet then you'll regret the road shoes. You likely have to do some modificatin' to the sole of the MTB shoes to get them to work with the quattros, but it would be fairly minor.
- should be fine at your weight. THe SLs don't have a weight limit.
- all shoes fit differently I always try them on first (I also have a hard time finding shoes). I'd only buy them online if I knew they were the right size (ie. i've owned them before). Then again Nashbar has a pretty good return policy.