Its not just you!
You're not going mad Adam, the 7114 is not in the manual! When I was researching this I did find a thread where someone had called vans and they said you can install it whenever you like. After some head scratching I realised that this part is unique to the taildragger and takes the place of the gear mounts on the A model, so you really can't go wrong by drilling them when the gear mounts would go in. Once drilled they are set aside until the wings go on for good.
RV-7- Wings done for now, canoe riveted.