Nothing about that pale ale recipe stands out as "bitter" or "harsh", so I would expect a "smooth" beer with the recipe given. FWH, in my book, are simply bittering hops with an added few IBUs - nothing about them is perceived as extra "smooth" to me. Take a pale ale with relatively low BU:GU ratio, couple it with a yeast that takes it's time to flocclate, and by the time the beer clears it should be well aged and mellowed due to yeast-isoalpha acid bonding and flocculation. I would try it again exactly as you have detailed.