What should be the ideal water temp that comes out the engine from engine cooling??

i have the Cooling upgrade $20 kit and a fizzle IC, and both have separate lines going in.

after a ride the water that comes out the left doesnít feel realy hot, so I am afraid my engines gets to much cooling and donít reach ideal temperature. I read some problems with oil in water problems with cool engines.

Some engine temps in the dash would be nice...

Outside temp today 77*F and water temp 66,5*F