Yes, All Routers, switches, and Servers Should have Static IP Addresses. Yes, Use ip addresses outside of the address pool.
On a Class C, i typicaly do this..
0 Broadcast
1 - 10 Routers
11- 20 Switches
21- 30 Servers
31- 100 Reserved For Whatever
101-200 DHCP Scope
200-255 Printers, Misc IP devices
Hope this Helps