The pizza shop opposite the Desert Cave hotel does (or at list did back in 03) make a pretty good feed for the hungry traveller. To this day it is the single biggest pizza I’ve ever eaten, big enough to plug a mining shaft. After that, head over to the Cave and have a couple of underground beers and give the jukebox a good workout.
As mentioned earlier, make sure you check the Woomera airspace (WRX) NOTAMs before you set out on each sector. Also it can occasionally get quite windy out that way so have a think about crosswind limits and reduced visibility in dust storms (not very frequent, but it does happen). VHF coverage is fairly limited as well, approx 5,000ft is the lowest you can get ML in the CBP area.
As for the GPS etc. everyone is going to have an opinion however your instructor is probably the best person to get advice from.
Have fun.
