Hi folks! Welcome to IRV2! It's great to have you join us! Congrats on the new 5er! We pulled a 5er for 10 years before going to the MH a few months ago and loved it! There's a lot to learn if you haven't done it before, but just take it slow and easy and you'll be fine.
My biggest caution would be to be sure you keep the tires aired properly. I always kept mine aired to the maximum pressure shown on the tire, in my case it was 80 lbs.
I would suggest you make some short (local) shake-down trips before making a long one. You'll learn lots that way!
Good luck, happy trails, and God bless!