S&P 500 does better than that. So take a mix of a low-cost market index fund and a broad spectrum bond fund, to your desired risk ratio.
No, it used to do better than that. Do you offer guarantees for the future (note that, for example, bonds will NOT be able to repeat the performance of the last 10-15 years)? There is also considerable volatility -- presumably you would like some assurance that when you'll need the money S&P isn't going to be in one of its troughs? And, as most everyone, you forgot about taxes.
I wrote an article about the process of signing up for cryo since I couldn't find any such accounts online. If you have questions about the sign-up process, just ask.
A few months ago, I signed up for Alcor's brain-only cryopreservation. The entire process took me 11 weeks from the day I started till the day I received my medical bracelet (the thing that’ll let paramedics know that your dead body should be handled by Alcor). I paid them $90 for the application fee. From now on, every year I’ll pay $530 for Alcor membership fees, and also pay $275 for my separately purchased life insurance.
http://specterdefied.blogspot.com/2015/04/how-to-sign-up-for-alcor-cryo.html