Inland, eastern part of Norway, where I`m from also has some backcountry strips which could be what you`re looking for.
-Maarud just east of ENGM
-Trysil which is a dirt strip in the woods east of beforementioned Starmoen/Elverum ENHN
-Mesnali pretty close to MES VOR, and just east of Lillehammer
-Reinsvoll just west of Gjøvik
-Dokka a bit further west of Gjøvik
-Frya which is up the Gudbrandsdalen valley which you can follow from Lillehammer northwards
-Gålå which is a mountain dirt strip (but I don`t know if it`s open anymore - contact the Gålå/Gala hotel for details) - very picturesque!
-Tynest is a gras strip north of ENHN but south of ENRO
-ENRO Røros... a twr controlled field situated walking distance to the traditional ton of Røros
-ENOP Oppdal for more mountainous terrain, paved runway
-Frøya - on an island west of Trondheim
Fishing in Norway will be good near all of these places. Some rivers/lakes are closer to the fields than others
I fly Dash 8s to the shortfields up north, but that`s commercial flying on IFR flightplans, som we only use IFR charts. But I think the M517 chart would suit you just fine.
Sounds like a really fun trip - the kind fliers in the US do from time to time.