John,
I think you'll be pleasantly surprised when you turn things back on, although it will be EXTREMELY nerve racking! Just DO NOT rush into plugging them back in. Wait until you're positive they're dry, and then wait longer. 4 years ago I had a similar thing happen w/a foot of water. Everything was wet and it seemed devastating. We let everything dry out for 2 weeks and miraculously the only things that were ruined were a tuner pedal and an octave pedal. Everything else just took a nice bath. One of the most depressing moments was lifting the bass drum up and dumping it out

. And now you can't even tell it was ever touched. Chin up man