If you're going to work with that small a dish, best to optimize the feedhorn.
So, no dual-band solutions. No Ku, just C-band.
An inexpensive solution would be the C2 at SatelliteAV.
Two output C-band LNBF.
The new ESX-242 over at WSI may be equally good, but we've yet to get a side-by-side shoot out between the two.
If you're going for the harder to get high FEC signals, then try a C-only orthomode feed over at Impakt Products.
They have inexpensive LNBs, as does WSI (and his dealers).
Or look to eBay for some Norsat LNBs at around $50 each.
Next step up the food chain would be a 7½ or 8 foot dish (or bigger)
And you could transfer your ortho to it, if you invest in one now.
Though, probably a C2 would be fine on the bigger dish. (?)