Re: acceptable distance for 9' 5 wt.
That is a good distance you are hitting now. Dont get too hung up and trying to send rockets out there with your cast. They arent normally needed. That being said, learning to put a haul on your line will greatly help with distance. I can easily hit 90' with just a slight haul on my backcast with no wind.
"When you do things right, people wont be sure you've done anything at all."
Storm Drain Bonefisher