Your configuration looks good as it is.
Sandboxie should take care of any threats that originate from online browsing. Otherwise, ESET NOD32 Antivirus is sure to pick them up and neutralize them.
Are you still considering the COMODO Standalone Sandbox that will be released by the end of this month?
Also I don't see Symantec Endpoint Protection mentioned anywhere in your config, although you mention it in some of your posts in this thread. Did you remove it? If so, was there any specific reason(s) and are you planning to replace it with an alternative?
Share with us the changes you've been making to you configuration so far, if you'd like. Your setup looks very intriguing, and I'm sure we'd all be interested to see how you've customized it so far.
All in all, great security config! There's nothing to add - all fields are covered and with good software.