I'm working on the electronics for the CEB 2 and the water pump, can anyone help with sourcing of the components?

Here's the Compressed Air Water Pump project page with the electronics schematic thanks to mimarob: http://openfarmtech.org/index.php?title=Compressed_Air_Water_Pump

Here's the CEB 2 automation page, which I'll be updating with more information on the design specifications soon: http://openfarmtech.org/index.php?title=CEB_automation

I need to get reviews of the designs and links to sources. Thanks for any help!