I'd say up to 5% if you can do it. Take care of all your needs first, or else you'll end up having to sell and it may not be at the price you want. I'd get into a retirement plan too, if you can. Crypto is way more risky and bitcoin is at its all time high. You say we're heading for the moon, but we may already be there.
Agree on this, you should not put all in one basket, you need to diversify. Also you should also priority your real life. And learn to buy bitcoin when on dips. So that you have money in the future to make your life comfortable.