I don't know the Urban Arcana supplement, but I infer from this thread that it has a built-in setting (or at least specific tropes/memes), and what you REALLY want is to use the DFRPG ruleset to run those UA pieces (& sundry other bits of the vast PF repertoire), rather than the DresdenVerse itself...
Is that a fair assessment?
If so... this may not be your best fit, actually. DFRPG has been heavily tweaked away from the "Fate Core" ruleset, to specific DresdenVerse elements. I might go with a more-homogenous blend of Fate Core + Fate Freeport + Urban Arcana, and use elements of DFRPG without trying to use the entire ruleset+setting...
Actually no, I do want to use the DFRPG in the Dresdenverse. As I mentioned above I wanted a framework for an adventure since I'm new to actually PLAYING the game, and I think the module is a good fit. About half my group knows and loves the Dresden Files books, and want to play in that setting. They all want an urban fantasy game that uses a system other than d20. I realize I will have to tweak the module to fit DF, not the other way around. Among my group I'm the only one who takes pre-printed material and tweaks it to my chosen setting rather than make adventures from scratch. I really enjoy it.