I think you should use only one of platforms.
In this way, after ICO, there will be two kinds of tokens. One in ethereum platform and another one in waves platform. It will be confusing.
Waves is a good platform. In my opinion use that for both pre-ICO and ICO. There will be no problem.
YOu are right,
Hi guys( The TS), what's your idea, do you want to take people money in you wallet. I think you look so greedy with your project. You seem to make on your own profit. Don't you think after sales, That coin holders need to get profit, not you to earn the profit. ICO make investors interesteed because the coin is worthy after ICo. If the coin useless what' for their invest. First you create token with waves with only 2-3 dollars then make million dollars. What do you think of that business? after that you make coin with eth platform. What do investor do after finished the first project. The waves coin you created will be worthless. That's not fair in business and investment plan.