Congrats on your new coach and welcome to the forum. Yes, if you haven't had an alignment done, your new Axis will not handle properly. You can start there and add more suspension upgrades as you need them. Just do a search on the forum for all the upgrades or mods and by all means download Ed's free manual.
I replaced the drivers seat pedestal with one that is 2" shorter and it makes a world of difference. Below is the link where I bought mine. There may be other sites with same base, but I think that was the best price at the time.
Happy trails.
RV Swivel Seat Bases,Chevy,GM,Dodge,Ford RV seat bases