Why not just use one of the hair-thickeners/concealers....with that amount of hair you have, while I can see a slight difference in density at the front, it`s still early-days for you to consider wearing..... at least try something liek Toppik or Nanogen fibers to see what it`s like...such a [relatively] small area and the `light` colour shouldn`t lead to too many issues such as being afraid to get caught in a heavy rain shower or pillow slips getting badly -stained.
Reckon you`d get good results at the moment with just a little thickener.. no point crossing your bridges before you come to them...cheers.