You're doing the right thing. If you are conflicted in the religion you will just end up depressed and your drinking will get out of control (I realise you've stopped now).
I was in exactly the same position as yourself. Had all those same doubts. I'm pretty sure I listed them here as well in a similar manner. I was also an active m/s opon leaving.
There is nothing worse than sitting in the hall week after week, year after year, hearing stuff that you simply don't agree with but feel compelled to believe. It's a complete mind f**k, which leads to the drinking & depression.
Life isn't an easy road for anyone, whether you're a JW or not. And I've been through a few tough times since leaving just due to life's cares & repsonsibilities. But mental freedom from having to believe AND preach about this or that which you don't accept is liberating.
Stick in. It get's easier.
Cherish your mental freedom.