I think its important to do both, flying within a club environment is very helpful as well as the more adventurous trips. I am currently hour building and am lucky enough to work at the flying school that I fly from. I have a constant stream of advice from the instructors who not only set challenges but also give no end of advice or help when I may have some more ambitious plans! I know im lucky to work at my flying school but do your best to get to know the instructors and the regulars at your club. I am sure they will be only to happy to help especially if your planning a trip round Europe. Best of luck with it all.
WD