From my experience I'd recommend taking 1 or 2 less land and getting a few more ramp cards so you wont be stuck drawing land when you're ready to play all those big hitters. Some non-basic lands could do really well, especially those with
forest or
mountain subtypes so you can fetch them or use the
mountain with Koth. You can always print a proxy of a card and put in in a sleeve over some basic land or other cheap card. It can save you a lot and give you more options, just make sure your play group isn' the type to be uptight sticklers about that kinda thing.
It feels like you know where you're going with this and pretty much took all that into consideration, but some reassurance is always nice.
Cheers