For me, despite the fact that Roda have scored a lot on the road (joint third only behind Vitesse and Ajax), Heerenveen have more firepower and will create more chances. This should ultimately lead to the home side outscoring the visitors and getting an important three points. The home side average just under 3 goals per game at home.
Finbogasson has been linked with moves away from Heerenveen, but he has stated that he is happy to stay - this will boost the side and ensure that he maintains his prolific form in front of goal. 17 goals in 15 league games goes to explain the interest that has been shown in him.
Roda will create chances, they nearly always do, but I think they will struggle to outscore their hosts. Heerenveen's direct approach should work for them, and mean that Roda don't get the chance to push forward as often as they like.