Your dry weight with options is about 3,800; add 500 pounds for options e.g. Microwave, spare tire, propane tanks, battery etc. Figure 4,300 dry plus 700 to 1,000 pounds for fluids, and your packed items in the trailer. So you will likely be at 5,000 pounds for sure. Most towing threads I see recommend that you not exceed 80% of your towing capacity. 5,000 pounds would put you at 90%. Maybe not too bad if you are towing hundreds of miles rather than thousands. The wheelbase is a little on the short side so this will be a negative for you. I would get the best weight distribution hitch and anti-sway capability I could get. Equalizer or Reese Straight-Line.
Also make sure you check out your maximum Gross Combined Vehicle Weight. (weight of your vehicle, occupants, gear and the trailer). Don't exceed that.
The SV250 is a nice trailer. We looked very hard at it. We wound up with the 235RKS. We also really liked the 264.
Good luck! I hope this all works out for you.