I have a Surly Double-Cross frame on the way and plan to build it up as a winter/cyclocross bike. I have some parts from an older bike and will get some new parts to complete the package. I won't be going with top-of-line stuff - low-to-mid-range items mostly. In any case I can take everything to my LBS to have them build it up, or I can do it myself. I don't mind putting the time in and my primary motivator is not to save money. I have some experience with things like adjusting brakes/derailleurs/chain/headset etc... The main concerns would be installing new bottom bracket (shimano Ultegra) and headset (threadless), which I've never done before. I guess I'd need to by a repair stand and the specialized tools for doing the BB/headset installation. I would also have to cut the steerer tube on the fork down to size - I guess I'd hate to screw that up! Any advice?

SAB