Some math:

Dev said 5 Billion supply, and 20% pre-mine.

So the pre-mine is 1 Billion.  Dev is giving away 100 million in airdrop.  So dev still has 900 million coins?  That's too much.  He will only be giving away a few million more in the other bounties.

DEV YOU NEED TO GIVE AWAY MORE PRE-MINE.  If you hold over 5% of the supply, no one will want to buy this on exchange.