Pin the test EW. 16 weeks at that dose would be ideal. 10 weeks is a little on the unproductive side in my opinion.
If you develop breast issues (pain, swelling, severe itchiness etc) take nolvadex at between 20-40 MG ED for a week and that should do the trick. A little itchiness is ok so don't freak out about it. DOn't take the Nolvedex unless you need it, which, odds are, you wont.
A low dose AI is never a bad idea but at 250MG it's probably not necessary. If you do the AI, you will not need the nolvadex but keep it on hand anyway. A little estrogen is not a bad thing. Too much estrogen is. YOu should be ok with this dose. If you do the AI, keep it low - e.g., .5mg (1/2)mg Adex EOD or 12.5 mg Exemestane ED. Nothing more. Those doses will completely wipe out any E issues without completely crushing E.
You probably don't even need the HCG but if you're going to take it, do a search for Swales Protocal. I beleive he advocates HCG the day before and after the weekly Test inject. Don't quote me though. Start HCG on week 2 or so and continue right up to PCT. In other words, you take your last weekly shot of test, continue to take the HCG right up to your pCT. HCG clears quick but it will suppress you so don't take it during PCT.
Clomid for PCT should more than do the trick. 4 weeks is plenty. 50mg ED. don't listen to the bro-science that would have you taking 100+ mg ED. It's totally unecessary and could do more harm than good. PCT is not meant to be a magic bullet; it is meant to slighty accellerate the recovery that your Endocrine system will give you anyway.
Most of all, don't over-think the whole thing. Keep it simple. ONce you chart the course, stick to it and don't switch gears.