The UAT should take care of momentary situations of negative 'G' in aerobatics. If you keep positive 'G' as in an inside loop, there should be no problem. All I can say is that the parallel system I described in my .jpeg drawing worked (at least until I stalled it on a downwind turn when I couldn't see the jet very well) and I tend to put a lot of faith in 'what works'. BUT - it is your jet and you can do what you want.
Regards,
Gus