Swap new BLNR for used AP RO?

[Eccentric]

Hi everyone!

I need some advice since I am tempted to swap my Rolex GMT MASTER II, 116710BLNR for a AP RO 15400ST.OO.1220ST.02. I purchased the BLNR 2019 from an AD at list price and have never used it, the watch still have some plastic on. The AP is pre-owned and in excellent condition, never polished and never serviced from 2016 and comes with box and papers. My current humble watch collection consists of the BLNR and a SUB 114060 which is my daily watch. If I trade in the BLNR I would get $13,961 for it and would have to chip in another $7,221 for the AP. What would you guys do? I have a hard time making up my mind on this one and would be very grateful for some advice.

Have a nice day,
Carl