I find 90mm, 150mm & 210mm a good working combination, I also have a 65mm that has got me shots where I need something wider than the 90mm. The Rodenstock 150mm f5.6 Sironar-N is a n excellent match to Schneider lenses and you can find Calumet Caltar branded versions of the Symmar & Sironar-N in the US which are often cheaper and only differ in name. The Caltar S-II is a Symmar S and the II-N is the Sironar N

That's the right sort of price for Linhof style boards.