You really should get a test BASE, not a BOOSTER. Dont risk lethargy man, its a potential cycle killer.
Theres a few options, ranging from mild to potent:
Dhea/prog (super dhea)
Epiandro
4andro
Test/pinning
Trestolone
Each will come with its own potential sides and risks.
The one major problem I foresee for you though is in regards to the RAD. Lots of guys get bad lethargy running RAD at around week 4-5, and no test base (none of the ones I listed above) seems to help.
This makes RAD very unique.
If this happens for you too, you cant drop the RAD as most would. Any test base is gonna be useless as far as minimising lethargy is concerned...what might you do?
If youve already purchased the triple SARM product, well hope for the best.