thinking of all the master recipes is quite overwhelming. i recommend just picking one, cul being the cheapest, and go with it. also, you don't really have to meld a full set of gear, because craft needs to go up first. get your first master book and craft the 50 for that tool. by then you will likely have accessories to convert, and possibly some of your gear. that is a nice starter set of materia. anyhow, that's how i did it.