$584 does sound quite fair for wheels with those components, yes.
I agree, that should be a durable wheelset. It might be too durable. (I know, oxymoron)
What he is proposing is really a MTB wheel build, and nothing wrong with that.
But - At your weight, you could lighten things up with different hubs and more road oriented disc rims, if you desired. Riding on gravel does not have the same demands on wheels as MTB riding, so the wheels can be a bit lighter without making big compromises.
I would suspect those wheels as described will weigh in excess of 1800 grams, and I would say something in the 1600 gram zone would be appropriate for gravel riding. It's pretty tough to get below 1600 for disc wheels.
So since I am all new to this what hubs and rims would you reccommend. It doesn't help any that I didn't get a chance to ride my 1st gravel grinding ride over the weekend(Farmer's Daughter) I guess I had in my mind it was up over hill and dale. Big Grin What I do know is that I want to get my rig set up the best way I can(without mistakes I have had plenty of them on the learning curve of road riding) so I can be somewhat competitive and enjoy gravel grinding to the fullest. Thanks again Zman
If it was easy it wouldn't be a memory. You just hope you don't have all your memories in the same ride. been there dun that Zman