Trans gauges

[JJSmitches]

I know temperature and fluid pressure are concerns for automatic transmissions. Is anyone running temp and pressure gauges to monitor a 700r4? I was looking at a 0-300psi pressure gauge but dont really know what range the temp should be in, there are a couple options available.

I have NEVER installed a 700r4 but am going to have the help of my uncle who is a mechanic at a GM dealership help out. I was reading on one popular transmission dealer's website that they require a pressure gauge be used to check operation when the trans is installed or the warranty may be void.