OP your base fares are referring to present 2023 or your anticipated 2024 base fares? Are you using the $25MQD waiver currently?
Do you plan on spending $75,000 on either AmEx The Platinum Card or Reserve?
With PM MQD increasing by $6,000 MQD (50%), with your 50 segments a year you would have to spend an additional $120 per segment for FCM. This is the hamster wheel that Delta management wants you on.
You may want to consider dropping all AmEx products and going with a CSR. Lower annual fee, PP, and 50% point bonus when booking through the UC portal.