Yes it will be good if you could do 3 section of Prp treatment , of course Prp treatment will not give you more hair than you have, but you will see different in quality of your hair (more strong)
If you want to fill full your hair line the way you have design, you will need between 2000 to 2500 fu.
You need to wait minimum of 8 month to proceed for 2ed operation, but ideally would be 12 month