I would use 2 wallets. 75% in one for super cold storage. 25% in the other in case you need to convert to fiat in a jam.
Initialize wallet 1 and write down your seed words. Place wallet and seed words somewhere in a fireproof safe. If possible put 12 words there and 12 in a safe deposit box.
Initialize wallet 2 and write down your seed words. Also, turn off wifi on your computer and make a text file with your seed words. Encrypt this file with a STRONG password youll remember e.g. "$gpg -c myseedwords.txt" save this file 'myseedwords.txt.gpg' to a usb and secure delete the original txt file. Place the seed words and usb stick in a safe fireproof place.
Use wallet 2 to accumulate until you reach a level to deep freeze and send overage to wallet one.
Educate yourself. You will have many thousand reasons to do so now that u are a HODLer. Never stop learning and always put security first.