I owned plenty of plywood guitars in the 80's including a Lotus Frankenstien EVH Clone, A Harmony Flying V, and Pink Heavy Metal Strat I had to paint Loch Ness Green for OBVIOUS Reasons... HM. and they were fine... They sounded just like the pickups I put in them... seymours fixed everything.
In my opinion you need to build the neck out of something crappy and make it stable so you can get cred.
What about a Plywood/Aluminum/Plywood laminate glued together with Epoxy? You can get nice pieces of aluminum at Home Depot and make a pretty rigid sandwich, plastic storage bag, little vacuum, little heat, and etc...
Also you should add a Hardboard (Yes as in peg board with no holes) drop top like my JS30 King V has...
And you might as well build some pickups. It is never to late to start experimenting. Have Fun! Good luck.