Question about SBS2003 restoration

I have in the past created cloned images of partitions in Server 2003, using Ghost, and saved off the images to another server.  In the event that the server died, I could fix the issue and use Ghost through a boot CD and restore the images back to the partitions and everything would be ok.  The images were usually of the C: drive and D: drive respectively.  I have used this procedure for DC's as well, but NEVER have tried it on a DC who owned the FSMO roles.

Question: I have a client who we sometimes support who has an SBS2003 server.  It is a DC and it is the ONLY server they have so it would have everything on it (FSMO, Global Catalog, etc, etc, etc).  The monkey who set it up originally created 1 RAID5 container with all drives then created 2 partitions on the single RAID.  1 for C: - OS install and 1 - for Data.  This is ok except he made the C: = 12GB and the Data = 285GB.  The Exchange databases, and friggin everything else is on the C: drive so they are now out of space.  

I want to Create Ghost images of the C: drive and D: (data) to another server of mine, rebuild the RAID structure (yes still two partitions total) and restore the original images back to the C: drive and the D: drive.  Basically, putting the 12GB original to a 80GB "new" C: drive, and the D: drive (who only uses 62GB or the 285) to a much smaller D: drive.  I have had this work successfully, as I said before, in multiserver environments.  

I need to know if doing this to an SBS2003 will work?  Will it still come up as it did before as the ONLY DC, AD intact, Exchange still working, SQL still working.  I know it can on a normal server but I have little experience in SBS2003 when it is the ONLY server in a domain.  Any insight or information would be greatly appreciated.