BTC/SOL split

If you were going to DCA a large chunk of your savings into a separate long term (10-20 years) cold storage account, what sort of split would you consider if you wanted to divide it up between BTC and SOL? Obviously everyone has different opinions on using other coins, but I’ve focused on these given BTC is likely not going anywhere anytime soon (lower risk) and SOL I feel has a promising future but is higher risk? 70/30?

Curious what all of you would do, and why?