TLDNR; I wouldn't over think it, make an IPA and simply pitch a Belgian yeast.
Since this style isn't experimental, and a Belgian is mostly defined by the yeast, i'd brew up any IPA recipe and pitch a Belgian yeast and you should be good to go. I just brewed a 10g RyePA (IPA) and pitched US05 in one 5g, and accidentally pitched some Belgian wit yeast in the other 5g. The one thing I'd note is that the character of the Belgian yeast can really cover the subtle hop flavors. I even dry hopped this bad boy with some brand new equinox hops and still don't notice much interms of hop character, but get lots of Belgian character. The batch with US05 is so good and the hop flavor is so clear.
Good luck.