One thing to consider is if the 65 mm is just an Angulon - then it will not cover 4x5, only the roll film sizes. If it is a Super Angulon, then it will cover 4x5 with a little room to spare. Where I live, there's is not much of a market so prices are very different (loony-bin high, rather). If I spotted this sort of kit for $1000, it would not be sitting long on the shelf.
The initial cost may be high for you, but you get a great kit for the money, I think.