thanks for the comments!
when you say I should replace the ST tire, you mean the extra one in the storage?
I tough of keeping it and just buy a second one and keep it inside the the trailer for the trip just in case one of them blow. And I also got a repair kit for tire this week.
I got the tools as well.
I will have all my tire check and rotate as well before I leave for sure.
I also got an tire inflator on Amazon and an extension cord that I can plug in my lighter plug inside the trailer. I hope I'm not forgetting anything..