Try Lyngsat
Code:
lyngsat.com
or KingofSat for transponder lists and coverage maps. I think you will struggle with a SKY dish in motorised operation. If you buy a regular Triax offset dish you will need a 40mm LNB (but I think you have one). SKY dish compatible LNBs are "cheap as chips" but not suitable for non-SKY dishes and vice versa. You'll find that manhandling a 1m dish up a ladder is a whole different ballgame to the SKY dish, so ensure you have an assistant! Work safely!