I find that having 1-50 address range is efficient for most house holds. And i have 15 devices on my network. All are reserved. Leave plenty of room for others to connect or visitors. I don't even use the 192 address range. It's not written in stone that you have to use the 192 address on you LAN system. It can be any thing. Mine starts at 6.###.###.###. Make your LAN IP something that fits your needs and is easy to work with and remember. I made my IP address from my actual house address. Works great. 
Well, you do want to make sure you stick with reserved private addresses, or you won't be able to get to any external address that overlaps the addresses you've chosen.
Reserved Private Address Space:
Class A: 10.0.0.0 through 10.255.255.255
Class B: 172.16.0.0 through 172.31.0.0
Class C: 192.168.0.0 through 192.168.255.0
Reserved "Current network": 0.0.0.0
Reserved for Loopback: 127.x.x.x
So you might consider changing to the 10.x.x.x space to avoid routing conflicts.