^^^^ Boog, if you have never owned or ridden a sidecar, I highly recommend buying a used rig already set up. Then if you decide you don't like sidecaring, and some don't, you can resell the rig and hopefully breakeven. But if you like sidecars, you can move into more expensive rigs designed for the type of riding you want to do on it, be it pavement running or off road exploring.
The Rocket sidecar is not for the novice sidecarist. It is an handful with more than enough power to get you into trouble fast. Sidecar driving is not difficult to learn but it does require a different skill set than two wheel riding. New skills and reactions must be learned and practiced. What works on two wheels in some cases is the opposite of what you need to do on three.
The national sidecar rally will be the first weekend in June this year, at the CMA Iron Mountain campgrounds in Mena, Arkansa. There will be a couple hundred sidecar rigs of all brands and styles gathered there. All riders are welcome to join the festivities, meet the owners, kick tires, learn more about the sport before putting down your hard earned money. I know of several sidecar owners riding over from Virginia.
Many many owners started with a URAL, me being one. Some moved on to different rigs fo various reasons, others stayed with the URAL. By talking with various owners, you're learn the why and hows of sidecars.
Since all US built sidecar are custom jobs, there are some great rigs out there and there are some death traps. Some will be money pits and others are an endless joy to ride. Only by talking with other owners will you learn which are which.
Good luck with your search. Be glad to answer any questions you might have about sidecars.
CCjon