Full Vacuum/Reindex vs autovacuum

I currently have Postgres 9.0 install after an upgrade.  My database is
relatively small, but complex.  The dump is about 90MB.

Every night when there is no activity I do a full vacuum, a reindex, and
then dump a nightly backup.

Is this optimal with regards to performance?  autovacuum is set to the
default.

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Thank you for your time,

Jason Long
CEO and Chief Software Engineer
BS Physics, MS Chemical Engineering
http://www.octgsoftware.com
HJBug Founder and President
http://www.hjbug.com