ROCK TYPE CHORD STRUCTURE IN ANY KEY:
Use your ear for what sounds right at the time...These options are often overlooked because they are not represented until later studies in conventional music theory.
Change the chord types (i.e., Major7, Dominant9, minor7, power, etc.) TONAL CENTER = E
There are several other options....
Combine these in different ways and get to know the sound each chord creates in relation to the tonal center.