My 0.003 cents (current value)
Hope someone else chimes in as well.
The battens you have are the ones you want. Judging by your sail number you have an Elliott-Patterson (EP) loft sail. As far as I know, the newer, flatter cut, mains have a somehow different batten, so if you "upgrade" to a new, or newer, sail you'll also need to purchase the current battens offered by Hobie.
Don't get too caught up in tensioning battens like we did with the dacron sails on 16's. Mylar sail's battens need to be snug.
As an aside, we started sailing the boat much faster, and more competittive, when I stopped worrying about things like batten tension and sheeted the main in WAY tighter than I ever did with a dacron main.
Sheet In...Max Out
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