4.88's with 33's is 3500 rpm at 70 mph. With 35's your looking at 3300@70.
It is going to depend on how you drive and wheel. If you do a lot of freeway and hills then 33's would be my choice. If you wheel and street drive then you "could" go to 35's but having had a 2.5 stick I would say 33's with 4.88 is your best all around with the 3 speed auto. It ought to crawl nicely with that setup.