This dump was expected. Let's see if it extends further or not.
Win-win situation, I love it! I tried to do the same with a little part of my holdings (about 5%) yesterday, which is totally stuck in Binance for now. Sold at $7400 and thought the same thing, "if bitcoin goes down, I'll buy back from this USDC bag, if it doesn't go down, I still win with my remaining holdings". But then I bought back the BTC (FOMO'ed at the dump) at $6800 as I liked the little 0.03 BTC profit off that Binance bag.
Based on what you've just posted, your holdings must be around
6.8 BTC. Not a small amount, well done!
Keep HoDLing!
[...I just love playing with numbers...]Oh wow! That number is
extremely close to my overall portfolio worth. We've got some nice mathematicians in this thread, I wasn't aware of that!

Honestly, ADA played a big role in getting me to that number; if ADA hadn't pumped as it did, I'd have been struggling at ~3.75 BTC instead of ~6.5 BTC. I literally sold the exact top of ADA/BTC last month, after it went 2x. Now it's back to the spot from where it pumped; however, I'm no longer interested in getting a crazy bag of it anymore as IOHK failed yet again to release the Shelley testnet on time. Without Shelley (PoS) on mainnet, I'm quite sure that Coinbase won't be listing them either.