If your going with Total Test think about SHBG.
But ... I think Free Test are great (depend your budget)
Don't forget hematocrit very important, PSA too because particulary if your inject every week.
Yes it's better if your use low dose to start and see after 3 weeks how do you feel (Adex)
Generally when the stuff work your lose some water retention and if the dose are elevated it's possible to feel that's on your joints (not a pleasure)
If you have opportunity try to add some primo (100mg week) on your TRT and depend your level (because 200mg/ week push to around 900/1300 the test total and depend your goal) 125mg test + 100mg primo / week (but if your react badly on DHT don't use it)
Happy week end my friend