BMonty25, well now you've opened up a whole new can of worms! the perennial 1/2 ton vs. 3/4 ton debate!
I'm sure the diesel vs. gas debate will work its way into subsequent comments before too long as well.
There is no doubt that your 1/2 ton is more than sufficient to pull your trailer. Some people successfully pull their contemporary 30 foot long trailers with much less beefy vehicles including SUV's, full size passenger cars and even minivans!
#1 - Just make sure that your weight distributing/sway control hitch is properly set up (your dealer should have done this for you and you can search other threads for tips on fine tuning this if you want.)
#2 - make sure that you do not overload the tow vehicle. Check the payload capacity of your 1/2 ton and figure out how much you are carrying (passengers, fuel, gear, cap or tonneau cover AND hitch weight of your trailer) and just don't exceed that figure. Make sure your tow vehicle tire pressures are set for the load you are actually carrying. You can weigh your loaded truck and trailer at a CAT scale at nearly any truck stop if you are unsure of the total weight of everything that you are carrying. You'll find many threads on this forum that cover the weighing process. You may find that the payload capacity is the limiting factor to your using the 1/2 ton.
The 3/4 ton truck gives you two basic upgrade opportunities from the 1/2 ton: 1) a higher payload figure, and 2) the opportunity to get a diesel engine (although Chrysler has recently announced the availability of a diesel in it's 1/2 ton.) There are other advantages with the 3/4 ton such as beefier brakes, larger passenger area, possibly longer bed, etc... but they tend to come with the disadvantages of higher up front cost, lower fuel mileage when not towing, harder to park and maneuver in tight spots, stiffer suspension, etc...
My suggestion is to verify the weight/payload issue and then head out with your current 1/2 pickup. If after several trips (especially mountainous ones) you are not happy with the 1/2 ton, then you can think about another tow vehicle.