There won't be any problems and dumping this coin is almost impossible. I have looked through the trading volume of this coin and can see that you can sell freely if you feel like. I think there will be many other exchanges that will list this coin so with 100k DIA you will feel this is a very small number of the total supply of the project.
Looking on how DIA price grows and its potential, I'm even having doubts that someone would really consider dumping this coins (speaking about bounty hunters). Take a look on previous bubbalex projects - their price continue to grow all the time. So why sell now, when in months you will have more.
I really dont understand why bounty hunters immediately sell their rewards. After selling, they keep all the funds in bitcoin. Yes, it might me safer, but dont expect bitcoin price to do +30-50% in a single day. While alts can do that.