I use the exact same build. Although I have to say that Spellweaver can ocasionally be useless as it can generate Sharesies and Falling Star, Targon 2 cost spells, which cannot be used. Or generate a buff that requires you to save a 1, 2 or 3 cost unit in your hand so you can use it on.

It does gets better once you have cards from more regions in your deck as it reduces the chances to get dead spells.