How long can I keep what I got? (Pics)

[BoSox]

This has been my hair for the last 3 years.. family and friends swear it hasn't changed.. i feel like It has gotten thinner.

With Propecia (4yrs now) and Rogaine .. is it possible to hold on to what I have? Or should I be planning on a HT.

My hair is very fine all over, so I don't think I'm a candidate for a HT, but then again I'm new to that procedure.

Is it possible for me to get a HT? Can I repair my hairline? Or should I be more patient.. I'm afraid I can't wait 3-5 years until these new treatments are ready :/