Hairsucks i know you did not really want to take fin/pro but it really is the only proven med to slow/stop/and may be regrow your hair,as i said to you on your minox subject the is a very very good chance you will not only stop further hairloss, but also a very very good chance you will catch you crown in time and grow that back. if you are going to give it a go please remember a few things so you are not paniked if they happen in the early days

,1 you might get a shedding phase in the first month or two,SHORT TERM you hair will look worse ie like it is thinning big time in a short period of time,this is the med's working,your hair will grow back if you give the meds time.2 you will get a decrease in sex drive or the erge,give your body time and it WILL re adjust,just give your body 6-8 weeks from when this effect kicks in and all will be back to normal.
Last thing you say you will never get a HT as you like shaving your hair short and dont want scars,as i said before if you wanted your temples closing up a little or filled in totaly FUE would do that and leave you with no scars at all

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First things first though,give the meds a bash to halt further loss,all the best TBF