This link shows the locals that are on 105
http://ekb.dbstalk.com/105list.htm
Unless you are also getting Charlottesville, VA, I don't think any of your locals are there, so you don't need 105. And I also think all of these locals have been duplicated on 129.
Hopefully soon there will be a SuperDish Repoint Kit out that will convert the SuperDish to a Dish 500+/1000+.
This link shows Richmond, VA locals are on 110, Channels 9385 - 9392.
http://ekb.dbstalk.com/110list.htm
So a Dish 1000, should give you Regular Programming, SD Locals, and HD Programming. If your area has problems with 129, then you could continue to use the Dish 1000 for 119 & 110, and then you could repoint the SuperDish to either 129 or 61.5 and pick up the HD with a strong signal.
EDIT:
It doesn't appear you are getting much HD right now, unless you have a wing dish with maybe a DPP44, instead of just a SuperDish 105 and DP34.