Absolutely, they have a nasty tendency to drop unexpectedly, this is why I always keep a bit of something or other on an exchange for emergency buys.

Not sticking to the plan has burnt me several times. Selling early is a sure way to lose money. I'll probably still do it several more times in my crypto career!

Cardano should still drop a lot relative to BTC. It's been way too high for way too long. A coin should earn it's keep, and ADA doesn't. That value is chiefly speculative.