My other advice is to start writing songs and singing right away.
I think being eclectic is bad when you're just starting out.
Normally when I work with bands I'm trying to refine and improve what's already there.
For a young band about to make a record, make sure you get the vocals right.
The vocals are what immediately draw people in and sell the song.
Brian Eno taught us how to use the Recording Studio as an instrument.