Module upgrade order for Progetto CC50 mod. 66?

Draschel: I hope i don't sound the part of debbie-downer, but this tank is horrible stock.The stock turret maybe theoretically thicker armor, but is completely flat without a gun mantle to protect it. The stock gun can be serviceable in front lines as 220 AP is acceptable, but the premium APCR pen is horrid for tier 92nd gun,  105/76 had so much potential because of the accuracy, pen, velocity - but is crushingly crapped on with DPM. Avoid it.The engines only provide 90 horsepower altogether, you may want to use turbocharger. Thankfully you can afford to, because gun handling isn't terrible like Rhino I'll pray for you. If you have 85,000 free exp, use it. Turret + 120mm. Then grind out tracks. Then engines.