I would love to pick up an air lift, but until then, on vehicles I am able, I fill the engine from the thermostat housing, install the stat and continue filling from the radiator or recovery tank depending on vehicle.
On vehicles that don't allow filling from the thermostat I will elevate the front of the car as high as I can can, pop open any bleeders, fill it up, pull off any hoses I think will allow air to escape in order to get more coolant in on the initial fill. Then I'll start it up and let it rock, I will also plug in my bluetooth obd 2 adapter and monitor coolant temp from my phone while im still under the hood topping things off.