If you have pulled trailers with Bulldozers and 30,000 lb loads, you will be fine. I have three rules when I'm pulling something new, until I get very comfortable with it.
One, If I have someone with me, they are not allowed to talk to me unless I ask a question or tell them "Now I'm good" when I get in an relaxed situation like on a highway stretch. In heavy traffic, making turns on side roads, backing up, maneuvering in a parking lot or fuel station, I want my entire focus on the trailer as I adjust to the newness of this particular trailer. Distraction is dangerous.
Two, I take it slow. No rushing doing something new whether it's backing it the first time, hooking it up the first time, everything needs focus and thought until you've done it enough to make it second nature. And then, still use a checklist! All three of the times I've done something stupid to damage something brand or nearly new to me, it was caused by being distracted or being in a hurry.
Last but not least, number three is the old G-O-A-L, GET OUT AND LOOK when in doubt. It only takes a second to check yourself and if your not sure, make sure.
Using these rules, I've made it about 20 years without a damaging OOPS moment. And I'm going to have to use them hard come spring as I only got 1 trip home from the dealer and 1 camping trip in before I had to winterize. So come Spring, starting over because those two were not enough to build any muscle memory or significant familiarity yet!
Good Luck in your adventure, take your time and don't stress, just focus.