That's looking great. I like the surface finish you have. Quite even.
I am interested to see how you sprue yours. I did mine internally which was rough to clean up. Probably spruing it underneath would be easier.
I haven't tried denatured yet. That stuff always makes me wonder if it is toxic in some way. It smells terrible. I'm also hooked on the butane torch, makes everything easy.
You should pick up one of those benzomatic soldering/heat gun tools. The 20 buck ones you refill with gas. Fantastic for flame polishing and getting a mirror finish on the wax without melting anything under the surface layer. They sell them at home depot.