So I found this Colorado blue spruce for $10 at my local nursery. I took a chance on it because of the price and trunk movement, but unfortunately it does not have a very good base. It’s wide at the front and back, but very narrow on the sides.
Is it possible to create a new nebari above the inverse taper by layering or a wire tourniquet with this species? If so should I wait until next spring to start that operation?
This tree has root over rock written all over it.
You have these roots all in one plane, more or less. And those roots are probably pretty flexible. When you repot next year you could tease all those larger roots apart and splay them out over a rock. The rock will add the needed mass to give a sense of stability.
That did cross my mind, and for 10 bucks it’s probably a good tree to try root over rock for the first time.
Will I need to bare root the tree to do a root over rock style next year?
I wouldn’t fully bare root it. Just tease apart the larger roots trying as best you can to maintain the fine roots at the end of each of those larger roots.
Okay that makes sense. Didn’t want to bare root.
In the most recent live stream @ryan explains that wiring a tourniquet for inverse taper has an unpredictable outcome.
The inverse taper isn’t that extreme and might change with time.
The first order would be to cut the lower left branch, its going to increase the swelling of that area.
You might hide it with branch placement or choose a different front and angle.
Can you post any more pics of all sides?
Good luck 
On another topic,
I don’t want to alarm you. Not sure if you already know, it looks like your siding on your house is asbestos. Get that peeling paint taken care of 
