EV, IIRC the K&A path is hard packed, small grain gravel, like many rail to trail projects in the States, so it should be great fun. You'll know the first round of mods you need by the end of the ride. You're very lucky to find that Moulton at that price, but you deserve it (part of the Folder Fleet Syndrome rationale).

Be sure to take in the Canal Museum in Devizes.