lazi,
I was surprised you were considering Cerakoting a Handi based upon the cost of the finish. Andy's suggestion would greatly reduce the cost.
I have owned guns with factory applied Duracoat and Cerakote and home-applied Krylon. Duracoat is garbage. You might as well spray the gun with a $4 can of Wal-Mart Krylon. Heat cured Cerakote is pretty durable (abrasive) and extremely durable (corrosion resistance). However, its not inexpensive.