Unless you go for most basic TC without a slide, expect to be over your GVWR. Most campers with a slide will be about 4000 lbs once you load supplies and water.
Your biggest limit on the truck are the tires and rims, so you will want to measure the weight on the rear axle empty to get an idea of how heavy you can go without upgrading to 19.5" wheels.
Without the camper package, your truck does not have a rear stabilizer bar - Look into Hellwig's BigWig. The suspension will most likely compress enough that the rear will sag - Adding TorkLift upper and lower StableLoads will allow you to carry most reasonably sized TC's with out the need for air bags.
You will need remove any plastic bed liner you are using but in a thin rubber mat - This is the bottom of the TC does not slide around. My preference is for the frame mounted tiedowns made by Torklift, but some people are happy with the body mounted HappiJack.
A short bed camper will have the same COG in a long bed or short bed, but there will be a gap between the camper and cab if you use a short bed camper. SOme people do not like this while others use it for external storage.
I'm sure you will have more questions, but this will get you thinking...