Originally Posted by
deadstick35
Get a solo sign-off and go right for the commercial. You have to do the add-on knowledge tests. Get the CFI and get some blade time, and then return for the IR add-on.
FWIW, F/w time means little or nothing if you want a job. It'll help for an IFR position, but those require 2000+ r/w time.
There are no add-on knowledge tests for any add-ons except for the CFI-H and ATP. Once you have a certificate at the Private and Commercial level or an Instrument Rating you do not have to take the written test again.