Steps to Maximize Security

[czglory]

Hello, I want to make my system as secure as possible (doing sensitive work online). I think a lot of these steps should be standard for everyone, any additional ways to securely thrive online are appreciated, I will be implementing most of these, I hope they do not become too much of an inconvenience.
http/www.tomshardware.com/forum/238574-49-guide-prevent-viruses-spyware
this seems like a good starting point, but its not enough.

• 
  Internet Security Suite (kaspersky, g.data, avast, commodo?)
  Run as a standard password protected account, with a (different) password protected admin account
  Run Secunia PSI regularly
  WIndows automatically updating
  Windows 8 64 bit (can't be linux for me, I think its more secure)
  UAC to max
  Uninstall Java
  Minimal browsing online, with Mozilla Firefox, No Script addon, and WOT, with AVG link scanner.
  Hardware firewall behind the software firewall in the suite
  secondary protection, like superantispyware or malware bytes
  Use alternatives to adobe, disable all flash
  Read emails in text-only view, hyperlinks disabled and all, and never download anything from an email without extreme caution (and scanning it first, then running it through a sandbox)
  Computer locks after a few minutes of nonactivity
  Disable auto-run/auto-play
  disable remote registry
  tripwire
  limit the rights of sensitive/potentially threatening applications
  uninstall unnecessary software
  encrypt hard drive with (?)
  password safe application with salty passwords and physical key requirement

any other ideas? anything ridiculous or unnecessary, or not worth it?
Thanks, I hope someone could get some ideas for security out of this also.

 

[The Stealthinator]

If you want to use your primary computer like this, I advice against it! Your computing experience will be too boring .

If this is a separate computer for which you're doing sensitive work, then by all means go ahead and install all the (reputable and trusted) anti-malware, anti-virus and other programs that protect you and do keep all security settings on their highest.

hope this helps!