For 33" tires and 3-speed automatic, you want 4.10. RPMs from 4.88 would be WAY too high for 33" tires and actually, 4.88 is even too low of a ratio for even 35" tires with the 3-speed automatic as even its RPMs are too high for highway use.
I had regeared my '97 TJ to 4.88 for my 35" tires and 5-speed manual transmission. The RPMs were PERFECT. Then I upgraded the transmission for rock crawling purposes to the same 3-speed transmission you have, which of course does not have overdrive, and the highway RPMs then became too high to cruise at my preferred 65-70 mph speeds. I had to slow down to 55-60 to keep the RPMs at a more reasonable level.
So ideally with the 3-speed and 4.0L engine, 4.56 for 35" tires and 4.10 for 33" tires.