Floating line foe nymphing? Sage indicator taper. Floating line for swinging? either beulah's elixir scando or a rio skagit short. I dont nymph but i heard the indicator taper is sweet if thats all you are doing.
I've not used this exact rod, but a couple ideas on similar 11' 8 weight switches.
Swinging: Something around 20' and 500 grains. The Rio Skagit short at 475 is in the discussion as is getting a 650 grain skagit head and cutting it back to about 500 grains. I did the latter for a Sage 8110 and then looped on 11' of T-10. Perfect.
For nymphing, I've heard good things about using the Rio Steelhead line in a 9/10 or so. If you think you'll want to nymph at distance, having a bit longer belly is useful.
Try before you buy, but that should put you very close.