Find out if you are elegible for the 30% tax break. Lets say you were earning 50k a year, your tax would be calulated over 35k, the first 30% is tax free. I had this back in the day, you may be eligable.
I've been here for 15 years, (John Major was in power and Anna Friel had just buried her dad under the patio in Brookside to give you and idea). If you have any questions feel free.
I've ridden around Walre en Valkenswaard under Eindhoven, not hilly but its good single track in the woods. http://www.mtbroutes.nl has a list of marked routes with GPX tracks you can download. Its in Dutch but start with 'kaart Nederland' and work from there.
Oh and congrats on the job!