In my limited opinion

Honestly with testosterone either run it at like 300 mg/w and stack others to do the anabolic work OR use 500-600 mg/w and less others OR go and use hgh and pair your hgh with your testosterone and take testosterone very high
Anything over 600-900 mg/w or so without hgh is a waste, better off using less testosterone and pairing with nandrolone or something. 4 IU hgh use upto 1.2 g...1.5g for 6 IU etc