Never heard of Pro-SD but the pct is gonna be fine. Don't think of pct as just a time to get natural levels back. Instead think of it as a time to boost strength also so reduce volume, increase intensity and bring in some ergogenics. Some popular ones are:
Quantum
Anabeta
Triazole
A preworkout
Mass Pro Synthagen
X Factor
Bcaa
Creatine
HMB