Newbie looking to buy first....well I'm not sure

The trailer you indicated looks like a pretty good match. I wouldn't go much (if any) heavier than that.

Keep in mind that a MH engine will need to be started and run regularly. The ethanol-content gas will degrade rather quickly, and if you let it sit for 6 months the MH might not start. Also the battery could go dead unless you keep a trickle charger on it. Do you really want all the maintenance tasks that come with an extra motorized vehicle?