When I was shopping BD for cyclo bikes, I narrowed it down to the Windsor Cyclo and if you're going to spend $800, why not spend $100 more and get the Moto Cross Outlaw with discs? The Cyclo has 105 shifters and seemed like an overall better package than the others you mentioned. If you're going to be cyclo racing though, I'm not sure discs are allowed.

First item of business is to make sure you get a bike that fits you. I'd even take a look at Performance if there's one near you. They have a Scattante and a GT that may suit your needs, and since you are a special size, could use a physical evaluation of the bike.