That sounds like an awesome putt-putt course. Gotta say I'm jealous.
As for the new putter, it is a must as the old one isn't going to do you any favors.
However, for starters, I'd check your local Golfsmith (or similar shop) as they usually have gently used putters for really good prices. That way you can upgrade to something that handles better and still not be out too much if you end up not falling in love w/it.
I've also found great deals on e-Bay for some super nice putters.
After you upgrade, you can spend for a custom fit one of the top line putters, but I'd wait until you get a few strokes w/a "real" putter 1st.
By the way, if I had a box, I'd ship you up one of mine that I don't use.
