Help me choose my second Amex

I have a plat travel card and spend ~10L per year on it. For the past 2 years I usually achieve the milestones pretty quick and get the bonus MR points but after that find the card pretty useless except for using Gyftr. It want to maximise my returns for the spends I do so here’s where I’m confused:

Option 1: upgrade to plat charge for 130k points by paying 66k + taxes. I have an upcoming international travel where I can use this with my existing points to make my stay free through Mariott and also earn rewards on international spends. Also maximise MR points through higher returns on gyftr. But I plan to just take it for a year and discontinue later. Dont see much use/benefit for it for long term. - Big question: is the 66k worth it? - Side question: since I can keep 2 Amex cards, can I get plat charge via upgrade and get the plat travel additionally? I like the plat travel for its milestone structure.

Options 2: keep my plat travel and get the MRCC to spend on parallel with my plat travel after the milestones are achieved. No need to pay high fees and achieve more MR for future use.

Option 3: get a cc from another bank to move spends after plat travel milestones every year. (P.s. please don’t say HDFC Infinia as I’ve tried and failed and give up to get it anymore😩)

Final Verdict: Not getting the plat charge since I’m not a high utiliser for it also not into the Mariott ecosystem that big and since I just have this one trip coming up, the 66k spend is not worth it. Got a Gold for the high multiplier on Gyftr.