Depending on how your setup is, this may help you or not. The way I do it (also using his partial mash method), is to toss the hops into the primary mash pot after pulling the bag out to sparge it. Then I turn on the heat onto that pot since its also my boil pot, and add the sparge after its done. I'd think you could toss the hops into the sparge water as well, but since I transfer the sparge water to the boil kettle anyways I find it easier to toss them into the BK. I believe the idea behind FWH is that they are slowly brought up to boiling temp rather than tossed in at boiling. Something about the slow increase in temp allows different isomerizations to occur, and your way sounds like it would achieve that.
The other option you've got available is to mash hop some hops. Just toss 'em into your bag before you start your mash and extract all those tasty flavors. Since there's no trouble with stuck sparges and BIAB, pellet works just as well. I'm not sure on the differences between mash hopping and FWH, but its something I've been meaning to try out.