Just share what I did:
On my Woocommerce site, there are almost 5000 SKU products, and I am using the following configuration now:
nginx helper + redis-object-cache
Merge + Minify + Refresh
EWWW Image Optimizer
The speed is just ok.
After setup a site with Wp-rockect, and only one SKU one site, the speed is no so fast like what I expected.
I have not test the the following conf method yet:
Since I am not sure whether it is suitable for Woocommerce site, or do you think it is good method or any experience with the above configuration on Woocommerce?