Sounds as if you are ready for the road,well almost,you need the trailer.
First and foremost you are in a unique (and smart) position if you have not yet purchased your trailer. You did mention you are new to RV and TTs so the following is intended to help you safely traverse the highways of this beautiful country and not as an insult to your knowledge or present equipment.
Please be aware of what you plan to tow with what. Meaning make sure you have more truck than trailer. Not sure what your TV ( that is the way we write "Tow Vehicle" on here) is but it will have a yellow sticker in the drivers side door jamb with a number. It will be near a statement that reads something like "All occupants and cargo SHALL NOT exceed" .That number works into calculations that address what you are able to tow safely and not exceed weight ratings on the axles,tires, drive line,transmission ect.. And most important not exceed the braking ability of your TV.
Please utilize the knowledge base of this forum before you purchase any trailer. The RV sales people have a reputation of only being interested in making a sale rather than the safety and abilities of the customers TV.
Go shop and ask questions on here before signing anything. If they can scratch out a "fantastic,has to be done now deal" once,they can do it again.
There are folks on here with a lot of towing experience and good advice and will be happy to help you.
2018 Ram 3500 SRW Aisin Trans. HO CTD
Air Lift Bags -Curt 16K Slider Hitch
2017 Laredo 350 FB