Hello and welcome to the Owners Forum.
I have a 2017 5245 which we bought new off the lot. So ordering one may give you a choice of options that could really complete your expectations.
We are happy with the 5245 as I was looking for a compromise from the outset. I wanted the smallest motorhome I could find that had a walk around bed and within my budget. The 5245 is good for parking, maneuvering, and getting under gas station awnings. You can find more camp sites that larger campers can't get into. Of course the large slideout gives you great living space.
Gulf Stream makes improvements to the model every year so our challenges may now be a non-issue. For long trips storage space has been a challenge but I have found many hidden spaces that can be accessed by making some changes. Any RV definitely gives you the opportunity to be creative to make it your own.
I suggest you search the forum for 5245 in particular as well as search for subjects of interest and look at what others have done. The suggestions have given me many great ideas.
Here are a few post you may find informative: