Upload & Sell: On
Dave - You send your film to the lab, usually downloaded into a spare film box - double boxed, taped shut and labeled that it has unexposed film inside, unless you're using ReadyLoads, in which case you just send those in. If the lab is local, you can probably just bring film holders in if that's the way you shot your film. You need to specify how you want your film processed - Normal, Pushed, or Pulled, pushed or pulled generally being in 1/8 stop increments.
As far as scanning, there are scans, and then there are scans. Frankly, I wouldn't trust any lab to make decent scans of any sized film and certainly not 4x5. You're shooting large format because you want the best quality you can get, and most labs simply don't have the equipment or the knowhow to make scans that are worthy of the best pieces of film. I can get into the particulars to look for if you are interested, but it's not a lightweight subject. All I can say is there's a good reason I've been making my own hi-end drum scans for the last dozen years. Not just to have the control over the quality, but because even in a major market like Los Angeles, it's virtually impossible to get a truly great scan. Just today I scanned two 4x5 transparencies of mine and four Kodachrome slides for another photographer. The 4x5's are easy. The Kodachromes are always a challenge.