welcome to project guitar
a gretsch white falcon ay?, u know they are archtops? which means they have bent sides and a carved top and back? i would not recommend making a archtop or even a hollow body for your first guitar due to the difficulty of it, but if you have your heart set on it then go for it, you just might have to fork out for alot of tools, and bob benedetto's making an archtop guitar book, ive got it right next to me (save money, borrow it from the library, i did)
i also would not recommend using a pre-made neck through, especially if you are going to have an arched top(well you cant use it at all really), because you are going to need a neck angle of about 4.5 degrees to compensate for the higher bridge/tailpeice and gonna need to cut a dovetail mortice and tennon, and making a neck isnt that hard, if you buy pre-slotted fingerboards, takes most of the guess work.
i would consider making a solid body flat top guitar, such as a tele, strat or rg type, or an lp, or somthing of a relatively simple deign,a neck through on ay of those would make your life even more simpler, cos then you only need to glue on wings, and rout for pickups and/or bridge
for wood of an archtop is not cheap as i am finding out, maple back and sides and the top is spruce or western red cedar. For a strat tele etc go for either a tried and true wood like ash, mahogany, bass wood etc or a alternative wood like amoora, (i made a through neck bass with that as the wings, sounds nice) png rosewood, that all i can really think of atm.
please dont take this the wrong way im not trying to deter you from making you whte falcon, im just suggesting you start with somthing easier to make, that requires less expertise to complete
luke
ps. what part of oz you in?