Have you checked all functionality and tested it thoroughly? Can it be used for production site?
We have NopCommerce 2.3 based site with more than 100k product and to be truly to you guys, NopCommerce doesn't scale very well with more than few thousands product with more than few hundreds visitors at a time.
To improve performance, we have stored category home page and product listing page including home page products in a binary in separate table of db. And storing frequently used binaries in memory to further avoid db calls. This works nicely with few hundred visitors, but still the high cpu usage problem is there and we're unable to figure out what is causing it.
If your approach works good, we would like to know how you do it and help you further test & improve it. May be that way we can make NopCommerce the great platform for high performance e-commerce site.