Running without a thermostat ok?

I hear where you're coming from, it looks like we're in for 95/100 degree temps for at least another week :banghead:.

I personally would not pull the stat with the scenario you wrote about. You actually have pretty normal temps for a standard cooling system. As long as you're running close to a 50/50 mix of coolant, I seriously doubt if you'll get close to a boil over situation.

As spoken of above, you do need "some" restriction in flow...especially on the highway. You gotta keep that coolant in the radiator long enough for it to do it's job.