What programming are you planning to get? The "standard" packages require the 110 and 119 sats for all the national SD channels and your SD lils. For most of the HD nationals and voom channels, particularly the new "MPEG-4" channels the 622 can receive, you'll need to get either the 61.5 or 129 sat. Why did you have the SuperDish - internationals? If your locals were on 121, they have moved to 110.
You won't be able to "see" 129 from the northeast including almost all of NY. (Buffalo is in the fringe, IIRC.) You will probably want to receive 110, 119 (D500 or your SD?) then add a wing dish (can be as simple as a D300) to get 61.5.
Keep your OTA HD equipment. Even if/when you can get your HD locals as lil you'll most likely have better picture quality from the OTA signals, and E* won't carry all the subchannels you can receive OTA. YMMV...