I took the advice of Richard & others and put the 300XL up for sale.
I'll keep my 295 instead - and by the way I have never had the slightest
problem with reception with the standard antenna with the unit
yoke-mounted.

So, all I'll have is the KX-155 with GS receiver tied to a 209 indicator
and a Garmin 340 audio panel with marker beacons, which I also picked up
used. Quoted intall price for this equipment is under $2K. As for
the audio panel, my plane doesn't even have an intercom yet (I'm using a
portable), so this should be well worth the money.

I couldn't get an appt at the avionics shop until May 10th! Argh.

If anybody thinks it's really silly for me to do IFR training with only
1 comm and 1 nav I'd guess I'd like to hear that.