Hey mate. Looking at your pics your side and back hair is pretty good so I wouldn't go the full cap route at the moment. As its your first piece mate go for lace, it is the most undetectable. If money aint a problem get a couple, one swiss lace, one french. French is more durable but a little, and I mean a little, harder to get perfect on the hairline. I would get 65% density, it is real tempting to go heavy but don't, it will be a headache for you!!!! Your temples look ok so don't worry about flaps. I woulkd get stock pieces mate, you can get them and cut them to shape. Regarding wave, as your hair is uite short it is hard to tell but I would say to try bodywave and/or straight. Good luck mate