Do not run Acutane on cycle, it is much to liver toxic.
HCG is planned out fine, in the above plan.
AT 25, it is unlikely you will be fucked up for life (in regard to HPTA) but keep the test dose low. The Acutane is much more likely to f-u-up for life (liver is more important than acne).
Your Arimidex is to high.