Thanks for the detailed answers, I really appreciate the time you took to do it.
I think I would err on the safe side and wait the three months as I don't think I could cope if I thought I hadn't done everything possible to encourage hair growth after a HT.
I think I might try and push my plans forward a bit to coincide with the end of this season, I am 44 and haven't got many seasons left in me so three months maximum which I can fit in in the off season is good news.
Thanks again.