Well done passing your PPL.
However it is a licence to consolidate and learn, very similar to passing your driving test.
So I am a little worried that already you are thinking about your first cross country to Shoreham, navigating from VOR to VOR, or as suggested ditching all you have learnt and flying A to B using GPS before the ink on your map from your qualifying cross country has dried.
Take some friends on local flights, try extended VFR cross country flights with a couple of land aways, get checked out on a different aircraft, as winter is coming get a night rating, try aerobatics, but for now leave the GPS alone and consolidate the basics.