You have money to invest, then why do not you just wait and wait. I think the money market is always vibrant, you should buy a lot of money you are sure to profit, you should buy the right to miss the opportunity, you will regret it.Life does not wait for us, you have to be strong in investment. In my opinion, ETH, is the most potential currency right now.
You would probably be better off taking that Bitcoin and short it at the high peaks and then rebuy at the dips. Then give her the cash for that. As it's been said here there is no idea what or where Bitcoin will be in 14 years. Some new coin that does what Bitcoin does, but better might come along etc.
I think what you are doing is great, but be prepared for change.