Go with buying bitcoin for 90% of your money.
For the rest of 10%, you may buy DASH and Dogecoins. I guess you have forgot or ignored to consider Litecoin as it is another long term stable altcoin. ETH is last joiner in this group.

Why only I am suggesting only 10% for altcoin is they are highly tied with bitcoin's value appreciations. So, when bitcoin flies they also will fly but bitcoin is the first one to trigger this for sure and more secured for your capital.