Multi DNS behaviour - best practise (cisco/windows)

Hi,

I'm looking for someone who has practically done this to try and answer a burning question.

When using DHCP we want to add 4 DNS servers to the scope as we currently have two. So if we have saw problems with first 2 the others would be used.

1.) Is having more than 2 possible on Cisco DHCP handoff config? ( I am struggling to do this and have googled alot!) 2.) Does windows os even allow it without customisation. I.e. if dhcp was setup with 4 dns handoff would it accept by default.
3. ) Is there an optional industry standard method like a load balancer or VIP I am overlooking that shud be used.

Thanks G