Yes, that'll work great! Use the Lightpipe ins and as you expand your system you can add more Pres and use the line ins on the 1814. I would recommend looking up MoreMe headphones. they're 30 bucks a piece and they've outlasted my 80 dollar headphones and sound just as good. Get the Studio Delux ones...
Good call on the HR's, and 6's will do ya for now. What mics did you settle on?
Jacob