Yes, but keep in mind to always have an UTXO of max 100k sats remaining, in case you got force closed channels in a high fees season. That will be used for the anchors reserve outputs and you can bump the fees.
nostr:npub1xnf02f60r9v0e5kty33a404dm79zr7z2eepyrk5gsq3m7pwvsz2sazlpr5 Is it possible to open a lightning channel using all the funds in one UTXO?
Like if I have 3, open a channel, and be left with 2
Discussion
On chain UTXO in the wallet or leave 100K in the channel?
in the node onchain wallet one single UTXO of maximum 100k sats. You can have less, no problem it doesn't have to be exactly rounded, those sats are only to cover the possible bumping fees in high fees seasons.
Do you mean minimum 100k sats UTXO?
No, maximum 100k. I think is mentioned somewhere in LND documentation github, but can't find it right now.