Off-Site IT

OK - Our company has 3 main offices and is a medium sized business with maybe about 100-200 computer users. Our IT Dept is only 4 techs with the the VP of IT living 4 hrs away and the 3 techs live in the same town about 30 to 45 min away from the corp office (which is where our it systems are located. Since our computer room is small and not enough room to expand, we are starting to talk about relocating our IT Dept along with our servers, etc. And also we are wanting to do this with our disaster recovery plan. Does anyone have any really good ideas or thoughts that would convince our CEO, President, VP, & GM. Or are they any good whitepapers or articles in the web that you may have used to convince your corporate management?? Just looking for any ideas or thoughts. Thanks in Advance!!