That's a heavy setup, and presumably you are planing on running it hard. The OMM racks have a great reputation, but the aluminum they are made of does not. Perfectly acceptible for some heavy mileage, but not up to the performance of Chromo. I'd go for the Surly racks, but they are really heavy so it's all trade-offs you may already have considered. I also like a front rack with a top ledge.
I don't see how you can go wrong with Arkels if you like complex bags, or the LHT if it fits you. There isn't any guarantee everything fits though, be aware you could have interferance, make sure you can return stuff if it doesn't fit.