Nice project! Welcome, from another newbie!
I just bought a 78 F model project bike as well. I think it will be fun if I ever get past the carbs. I am rebuilding the carbs now and, so far, I hate the damn things. Turns out that the carbs on this thing are the red headed step child of all CB750 Carbs. Parts availability is sketchy and everything costs twice what is should if you can find it at all.
They don't have replaceable pilot jets, the fuel valve seat is not replaceable, and they do have an accelerator pump. I hope you bought carbs from and earlier year model, I think they were a lot easier to deal with because they are more like any other motorcycle carb and parts are everywhere for them.
Good luck,
Wayne