That's what the majority is going to do as they did so far, look at the price.
Our calculcations are way different. I'm basing them on nethashps and I came up with 40% more coins/day at current difficulty.
Anyway, the 1000 block reward period will distribute a total of 1.440.000 coins. Even if one third of those coins would be dumped at for example 2k sat, you'd need 9.6 BTC buy support not to go below 2k sat which we don't have. I can't imgaine the price not taking a huge dive in the next few days and since the block reward will decrease from 1000 to 10 coin plus fees while no significant trade volume will happen will pretty much freeze the coin.
Your math looks correct but the price still depends alot on how the future plans of the coin the dev will announce.