>>Aside from breaking up the tables (which is going to be a pain), or upsizing to SQL (not a near term solution), is there anything suggestions?<<

Review some of the numeric fields and see if you can save some space by converting them to integer types. Many systems carry "dead" fields; see if any fields are consistently empty and can be dropped. Some characters fields might be shortened if their contents were consistently "shorter" or they might be candidates for memo fields (10 bytes in dbf).