I'd consider bell saison, unless you really don't want any of that saison character. I've found that while T-58 is acceptable, it takes longer to not taste green than other belgian strains. You CAN use it, this is just my observations (and I do use it still).
Alternately, the new Fermentis Abbaye dry yeast is a good mild, fast maturing, belgian strain. I've only used it for darks though, so I don't have a basis for how it will taste in a blond.