Knock out Italy first and then focus on taking Russia while defending against the allies west. its a fun strategy.
Right now you have 3 fronts west east and South, the problem with going west is even after Paris you still have to worry about landing and guess what? You make yourself closer to them.
The easier strategies are Russia and italy. If you go Paris you need AH with you and that means letting Russia getting a bit close to AH capital and east Germany. You need to buy and send the maximum amount of units you can to taking Paris, you are all in.