If you are still after solenoids, I have had good experience with http://stores.ebay.com.au/Nymet-Australia?
I’ve had mine in awhile now, I believe the units I have are:-
Regarding the Wireless, put the TLWR702N it in AP mode, set up security and your done (I believe DHCP server is on by default, if not turn it on and confirm IP range). Connect to wireless with iPhone/iPad using the security you setup on AP. I suspect you will need the open sprinkler app as the web interface does not work on an isolated network as it needs to download pages from the net. Ray can clarify if the app does work on isolated networks (I’m pretty sure Android version does).