I like it- That will be very nice and drinkable. The hop flavor and biscuit will add depth to the flavor profile in addition to the toast. Nice.
The steam yeast is a good choice, too.
Saaz is great but it plays very nicely with the other Noble and the Noble-type varietals.
I’d check out Tettnang or Hallertaur if you can’t get Saaz. Or go a little spicier and use some Spalt. The American Noble “children” will go great here too. Crystal, Liberty, Mt. Hood, Sterling. You have a lot of options and all of them are excellent.
I agree with Steve regarding IBU’s. If it were me, I would bump up the hops to around 25 IBU’s to help enhance that hop crispness and keep the drinkability up. It will also help to combat that malty goodness you’ve got in there.