The Thing with poenix is it's... not fully self custodial as far as I know, but you get the recovery phrase to recover your wallet, and in case for some reason asinq force closes the channel(s) you should be able to recover them with that seed on a main chain address... I think.

Again I'm not like. Super pro here. I've read a lot of differing opinions.

Like I said though, up front Phoenix seems less than ideal, but if you open your first channel large enough for amounts you want on Lightning,, eat the fee, you'll likely not need to open another channel. Just withdraw to on chain (for an onchain tx fee) when you get close to the max and open that LN liquidity back up tk receive more sats.