We had some non-warranty things done at the ExploreUSA RV in Denton. We felt like we were treated fairly price wise and the work was done to our satisfaction. Service manager there, Debra, gets high marks for taking care of business. As reported elsewhere here, not sure if they have a metal person at the moment, but other things could be handled. When I walked through their shop I really go the impression that they were up to most tasks. But from what I have witnessed, that is not a universal fact across the DFW metroplex with that particular dealership, but YMMV.
as to storage, you probably will just have to call around, although I know that Weaselmouth.com had a good experience with the Denton dealership finding them temporary storage nearby when they bought their rig but couldn't take delivery immediately.
Hope this helps