Have you thought about derma rolling with Minoxidil? Not for further absorption but it has a synergistic effect with growth through it's own mechanism - well that's what a new study showed. The groups consisted of minoxidil v minoxidil and Derma Rolling v Derma Rolling. Castor oil is a good option too. I think an FUE for the frontal area of 3k grafts would make all these problems disappear. You might be able to get by until your 50s on FUE and Minoxidil to keep a pretty full head of hair. Later it might look just like some natural loss. I'd look into your donor capacity. Biggest issue is you can't take finasteride. RU is quite a task to get hold off and perhaps expensive/unproven.