I'm on the go right now, but.....what you dont want is to just fill in a wide forehead with just a low wide hairline.
i actually didnt touch your flaps. i recessed the corners added curve.
you would actually want linger flaps that bring the pounts in cliser and fill the temples a bit w/o making it straight across.
temples have finer less dense hair That lays flat and back. if you go that route discuss it with john and yes you can cut them off.
remember with flaps you are now exposing more hairline and need a perfect attachment, its more maintinence etc. being this is your first piece you may find it challenging.
as i suggested post my mock ups at the other place along with your concerns, maybe under a new thread and include a link to the original thread