That Vegantune is certainly NOT "average", Allen! :wink:
185~195*F would be a nice "range", methinks. Temp at outlet will (usually) be around 195*F+ I'd expect. I normally go for a low temp t-stat... 180*: Florida in July is decidedly not where these things were designed to operate. Your climate is about the same. But there are more than a few factors determining temp's... don't wanna get me started on ethanol, etc.
Alloy heads are kinda sensitive to the higher temps (+200*) so I err on the side of caution. Combustion efficiency is likely suffering a bit, but I don't have any desire to warp "unobtanim" here. With all that monitoring rig ya got, you should be able to tweak the mix to keep it from goin' so lean as to get ugly, yet not so fat as to bog 'n load up. Webers are part voodoo so I tend to jet 'em a bit fatter just on G.P.
I've had very few temp issues with my own cars, cooling system flushes annually and always a coolant mix. If we got an overheating car in the shop, the usual problem (other than a t-stat malfunction) would be a radiator goober'd up from lack of maintenance.