Simple & Quick Self Custody advice.

1) Pick 3 hardware wallets (from different manufacturers) with the following requirements:

- multi-sig support

- 100% air-gapped

- BTC-only

- at least one with screen

- source available

- support to connect with third-party software wallets

2) Create a 2-of-3 multi-sig and properly backup the private keys and the wallet descriptor.

We can help you to decide which wallets to buy/build: https://thebitcoinhole.com/hardware-wallets