I want a short square hairline reducing almost half the size of my forehead with hair transplant. Is it possible? (Photo)

i have a very large forehead from long time, i would like to have my hairline down as in the picture , and approx how much graft is expected for that. and another thing, im i balding on the top of my head or is it just the way im styling the hair ?for the hairline , what would be the best solution, fue hair transplant? the line i draw on the forehead is where i want my hairline to be , can this be achieved. any risk of doing so ? Thank you