IF interested in retaining PA residency first check with PA DMV about requirements for PA residency.
Biggest issue will be 'physical address'----what qualifies.
Reason many FTrs use SD, FL, TX is because of the mail forwarding services that provide a valid physical address and the residency requirements that can be meet without jumping thru hoops/hassles.
SD has become less friendly because of issues with medical coverage for those not yet eligible for Medicare. Doable but limited.
TX does have 'yearly' vehicle inspections BUT that just means you need to have it done NEXT time you are in TX
Find out about PA Residency Requirements and then proceed.
We used SD.
We used on-line banking/billing
Snail mail was so minimal that we only needed to have it forwarded 3-4 times a year. Junk mail------they threw away.