7k trailer at the least.If you are doing this as a business , a 10k trailer is a better option. If you going to use your dakota, just add weight distrubution bars, will help alot with that little truck of yours. Adding a sway bar is nice , but can do without it if you drive it easy and dont do alot of highway driving. The big rigs sure can make your towing uncomfortable when they try to pass you. adding swaybars is a good idea due to dakota short wheelbase. You can always use what you got then when time is right, upgrade your vehicle.