That won't hurt, but (1) it can take months to get listed in DMOZ, (2)
the whims of an editor may result in your site not being listed at all,
and (3) Google seems to be devaluing DMOZ in recent months. DMOZ has a
huge backlog and bit by bit is running up against the inherent
limitations of a human-edited directory.
Better to (1) submit to Google (not necessary but won't hurt), (2) find
other websites with similar or complimentary themes and request
reciprocal links, and (3) update your site content as often as you can
to keep the site fresh and googlebot coming back.