@Willy: I am missing some more information ...
I assume, but don't know - UK citizen? G-reg plane, part-FCL PPL, no UL?
These information sniplets would be necessary to start thinking the right direction, as all of them imply different approaches.
If part-FCL, G-reg, UK citizen, then clearing the channel will be the most difficult thing you will encounter. Once you are in Schengen area, things should be easier. Flying in Hungary is quite easy, as long as you stay clear of their nuclear plant ... LHUD is nice, but also Pecs, Györ are worth a try. The Hungarian pilots will feed you with information as well, most of them are nice guys!
BUT, you lost me on your route, which airports do you refer?
LYD = Lydd, Kent
BNE = Brisbane? even with a C182 a bit far ...
CMB = Bandaranayake? hmmmm ---
Villerupt LFAW = that sounds familiar ...
GTQ = the waypoint?
KRH = Redhill?
LHUD = aaah, thats Szeged, fine and nice people there
or are you referring to IFR waypoints?