You should not do 100% power up posts while the price of SBD is trading above $1 USD . If SBD is trading for $4 USD, you can wait until you get your post rewards and take the SBD and buy STEEM with it. You will get 4x as much STEEM.
You could even buy STEEM and power up with half, cash out the other half, and still have more SP in end than if you did 100% power up.
