Re: Budget friendly wireless...
I will urge you again to look seriously at the Mipro Act700 or 800 systems. I paid less than $2600 for a 4 pack of the Act700's and got both handheld and bodypack transmitters for each channel. The nicer ones too, not the plastic transmitters.
The system comes in a 1 rackspace frame with antenna distribution built in for four channels.
RF performance is off the charts good. And the sound quality of the handheld is on par with the KSM9. It sounds different, but at least as good. Feedback rejection is excellent.
The downsides are that the magnesium mic bodies scratch pretty easily, and they are a larger diameter than the shures so finding compatible mic clips can be a challenge if you loose the MiPro clips.