Help Spec my Omni Security/Automation System

[ufans]

I've narrowed down my search for a security system, but need help confirming my setup to make sure everything is compatible and I have enough room to grow as the system expands.
 
Sensors:
- (3) Zwave door sensors [56A00-1]
- (2) Zwave motion sensors [47A00-2]
 
Additional Devices:
- (4) Contact Closure relays [1wire DS2408]
- (2) IP cameras
 
I don't expect too much expansion other than a few more Zwave devices.
 
I believe the Leviton Omni LTe w/ accessories below should do the trick
- 33A00-4 Controller
- 45A00-1 Wireless (Zwave) receiver
- 20A30-1 Notifier
- XXX backup battery
 
Does that make sense? How much room is left for expansion?  
 
Other considerations:
- I have a three story house w/o much access to hard-wire. 
- I have a moderate size 1wire network/control system that automates and monitors my aquarium w/ internet control and reporting via OpenWRT server
- I operate linux (Ubuntu) servers and desktops
- I plan on interfacing my linux(OpenWRT) or linux(Ubuntu) to monitor Omni security conditions, log, and report via email & text. Plan to trigger video recording based on security events and door bell.
 
Any help or advice would be greatly appreciated.

 

[Del91574]

The wireless is NOT Zwave. If that is a design consideration, then you need to recheck your plans.