That is awesome! Please make sure you wrote down your seed phrase and have everything secure. You are correct, first thing is to fund the on-chain wallet. This depends on what is your goal of this wallet? If you just need a wallet, for small purchases i think 500k-2m is a reasonable. just remember that you need to have a little bit more in the on-chain wallet than you intend to have in the lightning channel. If you use Telegram, I suggest you find Nodstrich The Nodestrich ♾️ and join. I can help you there and many others can provide even better insights.