Moving only one Kwikset 620 smart lock from ST to HA--recommendations?

Newbie here. I have read the other topics and do not see an obvious answer to my question.

I have only one Kwikset 620 and have no plans to get more, as I live in a tiny condo. I only have one unlock code, and at most might want to add one more, but I could do that on the lock itself. All I want is to see the lock’s locked/unlocked state and to lock/unlock it in 4-6 simple automations.

I’m running HAOS on a NUC with nothing else and using a QuickStick combo HUSBZB-1. I also have a Z-wave light switch less than 3 feet away from the lock. I am aware that I will need to move either the lock or the NUC to be close to each other to do the initial pairing.

I see three possibilities:
Z-wave JS (current with 6 devices)
Z-wave JS UI (I few devices so could restart from scratch)
Keymaster

Which do you recommend and are there others I’m missing?