It's not reasonable. Many hams have data capability, but there are several flavors, and you need to let them know what data transfer mode you'll expect them to use.

I'd suggest having a meeting with them and developing a consensus on what they'll use (packet radio, WinLink2000, short messages through APRS, WINMOR, PSK31, and on and on). Some of these modes have internet nodes, mail boxes, etc. If you have hams experienced in emergency communications, you'll have some people who can talk to you about what you need and guide you in building your base.

For some information, drop by
http://www.winlink.org/
and look at their "How to ..." tab.