1.5 optimization. Need an advice

[fishordog]

I'm trying to optimize my store as much as possible. I have 4000+ products and currently hosting on shared host. It takes time to get indexed and i have ~100 visits/day(excluding bots) so i don't want to pay for dedicated server yet. 

So far i did everything in the BO i knew:

- turned cache on/compile off

- disabled optional features

- enabled CCC

- mcrypt instead of blowfish

 

 

on server side:

- 4 sub-domains(/js/, /theme/js/, /css/, /theme/css/). How to check if this working?im getting 404 when opening any css from new subdomain. Do i need to create .htaccess file for each subdomain?

 

- gzip and eTag are already enabled by default.

 

- my host has Supercacher(mod-pagespeed, varnish accelerator(static cache), memcached)

I enabled only varnish accelerator, because others seems only slowing my site down. Any suggestion on this?

 

- can i create subdomain for /img/? If so, will it work with standard SSL or i need a wildcard SSL(for multiple domains)?

 

- is there any way to optimize all my curent product images in bulk?

 

Can someone please answer to questions above and give me some suggestions on what else i can do to speed up my shop?

 

Thanks

Edited November 12, 2013 by SeVi (see edit history)