I'd go back and swap that R1 for an R2 - the R1 is pretty thin - more like a heavier base layer than a mid layer and the R2 has an amazing range and is much more versatile. Better to be a bit too warm and open a zipper to vent for a few minutes than be cold an unable to get warm.
Plus they are having a 30% sale right now and a easy return policy. You can also look on 6pm.com where they dump a bunch of their overstock.
Re: Nau. I have a bunch of their stuff as they are local and I know folks over there. I love it for travel and urban bad weather gear, but the sizing is very tricky and varies a lot between pieces so trying before buying is essential. ( I think Paragon has it in NYC) Plus the sleeves are notoriously ape-length, even for folks with long arms so that would be a nightmare for Foo.
I have a Nau Shroud of Purrrin soft-shell that I wear on light days; arcteryx sidewinder for when it is harshing it up, which is generally the rule out here.