stock jeeps are a blast. but for rocks you will want to get lockers sooner than later. I've run rocky trails here in AZ without lockers when my locker switches had broken. but i couldnt take the fun challenging lines. I would actually recomend the opposite of KBR97 (not trying to start an argument
) and say lockers BEFORE lift and big tires. you can make it through alot more stuff with just lockers and a mild 1.75" budget boost lift and 31" tires versus having a 4" lift and 33"-35" tires without lockers.
but if lockers are outside your budget for now then i say just go for it and run those trails
bring a strap and have tow hooks front and back.