Be aware that your page outs, which indicate that you've maxed out your RAM, is cumulative since your last restart. Restart your computer to reset page outs to zero, then track page outs under your normal workload. If they're significant (say 1GB or more) under normal use, you may benefit from more RAM.
Also, you may have better success in attracting responses to your threads in the future, and you'll make your threads easier to find for those searching for the same answers, if you follow this tip.