5. Any advice regarding out of state purchases?
Yes bought mine out of state. I stayed overnight @ dealers site to check out.
if you can't stay on site make arrangements @ a campsite nearby so if any problems show up you can take back to dealer pronto with out having to put on many miles. Leave yourself extra time off for any issues that may occur. Make sure to check refrig. in all modes. Gas, Elect, & 120V ac. I had problem with gas operation of Refrig on my 2005 2720SL.
Have fun & enjoy
Bob