Anyone smart enough to work out when we will move from the "Mint" stage to the "Limit" stage?

Reading http://heavycoin.github.io/about.html

It says it moves to the Limit stage when there are 45,000,000 coins.  We're currently at just over 17,000,000 million coins.

Lets say the rewards stays at about 550 coins. 

45,000,000 coins - 17,000,000 = 28,000,000 coins until we get to the 45million stage change.

so 28,000,000 / 550 =  50,909.

So lets say about 51,000 blocks to go.  2mins per block.

I work it out at about 71 days till we get to the 45,000,000 coins which changes us to the "Limit" stage.  (Assuming block reward stays at around 550).

Does this sound right to you guys?