I am laying out my avionics and harnesses and wanted to see what the group thinks of placing some modules on a shelf behind the baggage compartment? I have a fast back (not riveted yet) and can put a 19" long shelf on the longerons with stiffners etc. I am using Advanced (VFR) for the EFIS and the modules are Dynon of course. I was considering the ELT, ADSB, Xpondr, COM, EFIS back up battery to be mounted on the shelf. The ADAHRS I plan on using a RV14 mount in the left wing and the EMS module behind the instrument panel. Opinions please.... Thanks in advance.