$70,000 a month is ridiculous. That's how many developers on full-time wages? (hint: between 4 and 20 depending on where and how much you pay them) That's just a stupid price to put out there with absolutly no knowledge of what's actually needed.
If you are after that sort of service, there's a few places that will help you out. Sucuri I know looks after the security side of things and can help with cleaning up hacks if they happen, but if you want something more personal, then post at http://jobs.wordpress.org and you'll get a lot of people that will be happy to help you out for a reasonable price.