Ditto with what Jerry713 had to say with one slight exception. You don't say what size your 2015 travel trailer is, so if it is small and space and weight are limited, then at least get an 8-ton bottle jack. I purchased my 8-ton bottle jack from Harbor Freight for $35. And don't forget to purchase a lug nut wrench. Most new trailers don't come with one and if the previous owner did not buy one for the TT, you need to get one.
2019 Jay Flight 264BHW, Rocky Mountain Ed.
2020 Ford F150 XLT SuperCrew, 3.5L EcoBoost w/Turbo