Yes I would still use my same tank setup. The main reason to use the check valve on the vent line is to keep fuel from flowing out of the model while nose down...This includes carrying it to and from the flight line as well as vertical lines. Fuel will flow out of the open vent line and will make a mess on the model. Also it can eat the paint from the side of the model.

I have even played with a header tank and it works well also. The header tank is you can stand the extra weight actually will eliminate any burps when the tank gets to around 25% full. With this header tank (2oz) it is possible to run the tank about 95% dry before it burps. If it burps then its out of fuel.

I have also found it helpful to not run the motor dry in the air. This lean run condition will cause problems with the motor wearing out parts prematurely. I'm not always faithful with this but if you have problems maybe you should not push the limits. Running out of fuel in the air is a LEAN run.

Below is my normal tank system.