You can't avoid taxes legally, when you are saying how not to pay the taxes but you can pay less taxes if you managed to hold your assets over a year and the rate of tax depends on the state where you are living.
You can avoid taxes legally - ask the rich how they can do so. Because I have a feeling only we, the poorer, mostly get to pay them
On a serious note, perhaps it's a good idea to get in touch with a good lawyer or so and ask them if your idea is a good one and whether it's still within the limits of the law. But a personal opinion of mine: if you find a way to avoid them,
keep your lips sealed. That is because if enough people follow your way of legally avoiding the taxes, they will find a way to stop you from doing so.. 'cause they hate it