Sounds great - enjoy
Try asking the VW dealer if they offer remaps, I got mine remapped at VW Towcester through there tuning specialist (Richter) I think. They offer warranty on it as well so could not go wrong.
I also value fuel economy when just communting and regularly get mid to high 30's on a long run A43, M40, M25 from Leicester to Staines. When you cruise, the economy is just like stock, when you push it then it will drop into the mid 20's - or a lot less if it is just a country blast. I have also seen 40mpg on a long run in constant traffic doing 50mph (heavy commuting and roadworks) (I commute mainly on motorways)