Buying the $200 Silver challenge might make sense. Depending on your schedule, you got a good shot at upgrades. You get instant status, no match necessary.

If you want priority boarding, the $89 credit card might make sense. You get zone 2 boarding.

Amex has a lounge reimbursemant program where you pay and submit receipts? Might make selective sense.

You could always buy a refundable AA flight, use your amex plat and then refund. Pain to do, but possible.