I presume the new textures are 4096? Will there be an installation option for 2048 as a compromise as there was with CYVR? That's the option that made CYVR usable for me.
You can use the HD texture setting in the Addon Manager, and put it to 2048, so all the 4096x4096 textures at JFK will load at 2048. At CYVR, it made sense to make a specific install option, because we had the entire scenery made with 4096x4096, so the 1.1 installer gave the option to choose precisely what to compromise, because we had the 3 main things ( buildings, ground and dynamic shadows ) that could be configured separately.
At JFK, we don't have dynamic shadows, the buildings are already at 1024, and the ground can be lowered to 2048 or 1024 by using the Addon Manager setting, so there's no need for such fancy installer options.