Order the machine with a ten hole panel (these can be fitted to standard machines now) 'just in case' you want more holes later.
Garmin 430 (nav/ com) + a Bendix King KX165 with glideslope (just in case for later). This gives you two radios and two sets of nav boxes for NDB and VOR/LOC/ GS.
If you feel like spending money fit a Bendix King HSI for radio navigation use. If getting a VOR/LOC to go with the KX165 get a VOR/LOC/GS indicator instead (just in case)
As a backup and etc fit a Skymap IIIC Topo on the panel top.
Fit an ELT for overwater use out of Eire ...
.. and four point front belts for the harness.
.. and a spare eyeball (to spot jets) and monkey chow (sorry, dropped into Buzz Lightyear speak then, you have to know the film to appreciate the point) ...
h-r