In regards to a new card, if you are up to collecting more URs and having a better redemption rate, the CSP just wrapped an all time high bonus of 100k URs. The good news is there are still DPs of the offer being live if you apply in-branch, plus the $95 AF is waived. I'd recommend this card for P1 and P2. But, you have to act quickly- probably within the next few days, but it could disappear anytime. You can then redeem URs at .0125 cents rather than the 1 cent redemption rate you'll get, if you are booking through the Chase Travel portal.
Before transferring points to an awards program like Marriott, I'd always check that same rate through the Chase Travel Portal (assuming you get the CSP). Let's say you can get that room at the Swolphin for 50k per night. If it's $300 through the travel portal, with a CSR, you'd pay only 24k URs. Of course through Marriott, there's the 5th night free when booked on points. You can do the math, but you'll probably still come out ahead with booking through the portal.