I think we might be built alike. Just getting the club "in the slot" on the way down almost gives my right lat a charley horse. That being said, on days that I am able to swing from the inside (as much as I am able to) I end up hitting push fades if I forget to bring the clubface back to square.
I can usually remedy this clubface issue by using a "motorcycle grip" revving motion with the pinky part of my lead hand to square the face. Some people say to just bow the lead wrist to close the clubface but when I use this swing thought I end up bowing towards the index finger which keeps my clubface open.