Hiya Doc...welcome to the forum from another Oregonian!
305's will probably rub on the stock wheel due to the positive offset. 285's will fit and shouldn't rub even at full steering lock.
Lifts are never cheap, except the ones that break on ya. I'd go with either a Rough Country or Superlift kit. 4" will work great with a 70 aspect ratio tire.
I used to have a set of 320/60Rx18's on a +6 offset wheel. A stock wheel has a +18 offset if I remember right. I don't have a pic here at work of the current setup, a set of 285/75Rx18's on a +18 offset rim.
If I remember
I'll post up the pics for your perusal tonight...