I started with a cheapo flux core mig welder, and it proved to me that some mig welds can look okay, but not be solid. I wasted my money buying it because it had a limited duty cycle and would overheat on anything but limited use. Don't waste your money on a cheap 110v. mig.
By the time you pay for a decent mig welder, you could have paid for a good stick welder and kept $ in your pocket. You'll need 220v power.
On the other hand, if you expect to weld sheet metal at some point, you may want to save up and get a good mig because it will make it easier to weld thin metal.
If you're going to be welding thicker stock, a stick welder is all you need.
You didn't say if this is your first welding experience. If it is, for your sake and the safety of everybody else, make sure you do a good job welding. A weld that looks good on the surface, might not be good. It takes practice to tell the difference. Any trailer that fails on the road can injure you or other people. I recommend welding some other noncritical stuff first to make sure of your welds. :thumbsup: