I have searched the forum and found a similar subject as that I entered above but my situation is a little more unique. The current theme I've had running for about 5 years is outdated and during this time we have tried out probably over 50 different plugins and eventually cut down to 23. Now the site is getting 7K+ visitors a day and every time we try and launch the new site the server crashes. I have recently tweaked W3 Total Cache to work with a CDN to try and offset this.
Any advice on this matter before we try again? Is it best to start with a fresh new wordpress install that references a new database and implement the latest plugins? If we do this does this mean everything has to be re-cached so even the CDN's could not be helpful?
Greatly appreciate any input you guys have on this matter!