TBH, you should give a minimal dose of finasteride a try, say like .25 or .5 mg. You know further loss is inevitable and this process isn't cheap.
I did have side effects at the full 1mg dose, thats why I think its best to start at a small dose. It wasn't ED but more of pain in the prostate area which subsided when I let it go away for a week then switched to .25 and eventually to .5. Now I take 1 mg and notice even more hair gains. If anything taking Xanax on and off has given me more ED problems than finasteride has. The donor extraction looks concerning but I do know asians have thicker hair and maybe he had to use a larger punch. Do you know what size he used?