Simcoe/amarillo is my favorite combo for IPAs/APAs and even ambers. It's not the least bit floral, though- it's very grapefruity with a hint of pine. I buy several pounds of both varieties every year- and use every bit of it!
I like the recipe, but I'd up the bittering (maybe using a different hop, as I like the flavor of simcoe and it's relatively rare and I wouldn't "waste" it on bittering), as I think with that grain bill you'd want more IBUs. It looks like it's only about 30 IBUs, and I think that much crystal malt needs that to be more like 40 IBUs for balance.
Broken Leg Brewery
Giving beer a leg to stand on since 2006