I use a Ries J100 with double tilt head with my Wehman. I bought it used for a fair price on Ebay. I can't remember what I paid now. Buy used and save yourself some cash for film.
Ries, Berlebach and Gitzo all make fine tripods for 8x10 cameras. Feisol and Majestic also have great reputations but I have no experience with them.