My suggestion is use as much of your own hair as possible, and if you have hair on the crown, go for a partial topper. Looks like you will have to shave the top to get good attachment. You may want temple flaps for the style you want, but if you do, go easy on the area. With the hair you have, it would be easy to "transition" to fuller hair with a piece; it would not be hugely obvious. As for the particulars(color,density, etc.) John could guide you easily from your photos. For the base, I'd say French lace, especially if you have flaps.

As for your combover, it's not that bad, really. But I understand why you hate it. Been there.