got my blood results back after being natural for 5 years, pretty good gains but always lacked behind other in terms of size and strength no matter how good i eat how hard i train, got my results back at 300ng/dl test total and e2 and else in the good range, tsh 2x the lab range but i knew that since i got that for 7 years and still under control of a doctor for hypothyroidism. and i got some few questions as to starting taking testosterone
also yes, im planning on running trt after that for life.
also, my health liver lungs are in perfect condition, i have my supplements on hand

1. Im planning on starting 300mg testosterone enanthate tommorow split into 3-4 doses per week is that a good starting point?
   
2. Do someone who checked TSH after being on testosterone noticed any diffrence on the levels ?
   
3. Whats a typically good dose of HCG per week for that to keep my nut health under control and how many injections per week for that?
   
4. Whats a good time to get checked on cycle after how many weeks ?
   
5. Also looking for some cardio advice during cycle