Here's the thing .... a managed host may be able to
lighten the blow somewhat using
DDoS Deflate, tightening up some firewall rules, temporarily reconfiguring your php.ini, etc., etc ... but if the attacker is stubborn enough, what's going to happen is that your site will stay "up", but it will be severely bottlenecked, as your load balances go up into the double (or even triple) digits ... which will mean half of your
legit traffic is going to back out of your page before it even loads anyways!!!
Between the added expense of DDoS mitigation, and the loss of legit traffic, I would say this endeavor is a bad one before it even begins ...
For a site that is not making you any money, I have to wonder why you want to keep it up so badly?
