Rocket Pool staking question

Hi, I’m interesting in staking my ethereum when Rocket Pool launches, but I have a question…

Let’s say I have 8 eth that I want to stake. I would get rETH in exchange.

I know that is a taxable event. I’m in California, so that would be around 15% in state and 23% federal… It’s been less than a year since I bought my ETH, so the gains aren’t too much at this point.

My question is, though… In the future, say I’ve been staking and holding, and the value goes up, and I get to the point where I want to sell - would it be another taxable event to go back to ETH, and then yet another taxable event to sell?

In summary, my question is would I get taxed three times in order to stake and sell my ETH at some point?