G-Tropin IGF-1 Long R3 Help!

Hey guys i need some info regarding IGF use for my brother is stats:

Age: 25
Weight: 109kg
Height: 191cm
Training exp: 5Years
Bf: 16%

We would just like to know what the dosage would look like, we where told 2.5IU twice a day one upon rising and one before bed?
Also what would be good to stack with IGF-1, he was thinking something like Var(Hes not to keen on taking Test).

Thank you!