Simple Green and a Garden Hose
 

For the engine bay cleaning? Good combo?

Should be ok. Just make sure you cover your intake, battery and alternator. Dont do a full jet stream of water where you blow half your engine away. lol Spray the simple green all over, let it sit for a couple of minutes, use a brush to loosen up any stuck on dirt or grime, then rinse it off lightly with the hose. Let it dry and then dress it up with some engine shine.