Well Hollywood celebs do this all the time, so they are not found out before it's too late (going bald that is). There's a lot of people that wait til there bald on top but personally I don't understand that. Once your hair deteriorates you should try and kill the monster while its little, whether by lotions, pills, concealors, hair transplants or pieces. I've tried everything but a HT, and thats not viable as the cost is too insane. So I too have hair like yours, a little more diffuse, and will try the piece route soon.

You could probably do once piece all the way across, blending may be difficult, give it a whack.