Originally Posted by: jshwaggle... am, e7, f, and g. not quite sure what scales sound good over 7's.

Write out all the notes in all those chords and you will arrive at a scale you can use. Also, if you are playing an E7 (a dominant 7) chord, then you are modulating. Therefore you will need Phygian Dominant.

Check this lesson for more details:
http://www.guitartricks.com/lesson.php?input=10978

PM me if you need more help.