Couple of questions though:

Can I have 7.4v going to the servo all the time?

HV servos such as the hitec 7954 can handle a 2s lipo without a regulator right?

Then all I would do is Y the battery connection--one end going to the 6V regulator which provides power to the RX and the other going to the servo(s) power wire(s) with the signal wire from each servo going to the RX. Is this correct??

Thanks again