Thanks for the comprehensive reply
I ended up just leaving standard universal LNB's on 19.2E and 13.0E connected to 2 receivers with diseqc switches.
I don't really watch a lot on Hotbird though, so my plan for the summer is to just have unicable LNB's on 19.0E and 28.2E to feed all my receivers.
I'm sure your method will be a great help to others in the future, thanks for taking the time and the trouble