You get 5 Very powerful votes, and then your voting power begins to fall. This doesn't mean you should only vote on 5 posts, it means that your voting power falls earlier than it did before
Just for your consideration, your personal voting power is currently at 98.5676%, because you are an active curator. Not 100%. All that will happen is this number will fall quicker than it does now.
You can view your personal voting power here
Yeah, but the problem is I believe your voting power getting diluted if you vote over the target means less total rewards thanks to the payout formula.