With 10 bitcoins invested in altcoins I would definitely make sure the biggest part of them goes to ethereum because it is the altcoin I believe the most in. Also neo, eos, cardano would be on the list too.
Great!!! If it was me, I would choose ETH, NEO and ADA because it is very strong in the cryo market, for its projects you have also seen it grow stronger and here it is also Make more projects so you invest early when the price is low.