You're not likely to find a radio that does CB and VHF in one unit. The FCC likes to keep CBs and more powerful radios separate. Five miles is really pushing it for a handheld since they're usually limited to 5 watts.
A GMRS radio with an external entenna may do it in the open over water but not likely over land. My stock Midland gets out 3 miles max. Your best bet is a 2 meter ham radio in your vehicle. But, you'll have to get an amateur radio license for that. That will easily cover that distance.
08 4 Door Rubicon
Member of Two Trackers 4wd Club
Great Lakes Four Wheel Drive Association
United Four Wheel Drive Associations