I would definitely think seriously about both the 15K upgrade, and the 50 Amp upgrade. Not sure if I would worry about the dual A/C. As a point of reference, I don't have the Eagle, but I have a Tracer 2640RLS.
It has factory upgraded 15K A/C, and thus far, it's been enough in the Georgia summer. I leave the fan running and the A/C cycles on and off, keeping the trailer pretty much at 72 where I want it.
I wish I had 50 AMP in my TT. A friend was having breaker problems with his 30 amp service and he bought a box to measure amp draw. He measured A/C, Elec HW heater, and Fridge, and those three exceeded 30 Amps on his trailer. I borrowed the box, and measured mine. Im better, but my 15K A/C used 12.5 amps, my HW heater (on electric) uses 12. Fridge took 2.5 and microwave took 8.3. So, with A/C running, and my HW heater on elec, and fridge on electric, if I use the microwave, Im over. Microwave took 8.3. by the way. With the first three, Im already at 27 AMPs. I don't like being that close, so I will likely run HW heater on propane.
So, I think, given the option, I would definitely go 15K A/C and 50 Amp upgrade.
I wish the manufacturer would have thought about doing a 50 Amp upgrade with the 15K A/C upgrade in the factory.
Mike
Im Mike Willoughby, and I approve this message.
2017 Ram 3500 CTD (aka FRAM)
2019 GrandDesign Reflection 367BHS