The only tax planning tool that TurboTax offers can be found here: https://turbotax.intuit.com/tax-tools/
...but it may not be what you are looking for. There are a lot of other tax planning tools out there that a Google search will uncover, but nothing we are willing to support or endorse.
Even then, being able to project 25-30 years is going to be a challenge because of all the changes that could, and most definitely will, happen to the tax law in that time. Still, it is a worthy effort where you should start looking at it on a rolling 5 year basis or so. The key is to review it frequently and make any modifications as necessary.