I can’t say what’s best for your multimonitor setup but I’ve just got a 5060ti 16GB gpu and I’m very happy with it so far. I’m running at 1440p with two 32” hdr monitors and have most of my settings at high , pre cache at ultra, texture res high.
Flying low over London photogrammetry I’m sometimes seeing just over 12GB vram usage.
I’d guess if you do that sort of flying the 16GB will be more beneficial than the slightly better grunt from the 5070. Got an MSI inspire card which runs very quiet and stays around 50-55 C in a 2 hour flight.