I have had 8000+ grafts transplanted over 15 years . Has definitely improved the front part and crown area. I'm currently insecure with my large/ long forehead . I want to bring down hairline a few cms via FUE . 1. Is my donor area sufficient to lower hairline further ? 2. If yes , how many grafts would I be able to get away with, can I go more than 1500? Is my donor area sufficient for another 5000 grafts ? Or too light ?