Thanks alot for all the comments and advices!
Also i've never tought about practising taxiing, i've done almost all of my flight-training on a controlled airport where you need a clearence for everything and almost all general-aviation airfields has been closed down by our Swedish government for no good reasons, so my opportunities for practising it has been very limited, but i will select a good field for that matter during my next cross-country.
Also i've solved the fuel-issue by writing the letters F&C with inc on my maps, along all routes and places that i fly over frequently.