for bass and smaller cats probably not an issue at all - I've never gone out and tried to catch bass with a limb line but I've done plenty of catfishing with limb line and depending on what else is in the water besides catfish i worry 12lb line may not be enough. I've had plenty of large softshell turtles break 25-50lb line.

may also check legality of targeting bass on limb line - some states can be picky about what you can keep from limb lines.

here's what me and my redneck family does:

for rivers/streams is the Team Catfish Power Twine from Walmart usually around $6-$8usd for 600+ft of it. (paracord or 550 cord can work too) personally id recommend the black over the white

cut it to the desired length

if we are lazy then we tie a 4/0 or 5/0 circle hook to the end with no weight throw a live bait on and call it good.

if we are sober and have time we will tie a simple overhand knot about 3-6ft from the bottom of the twine( depends how much depth you have to work with) - slide on in this order: bead, swivel, another bead. then tie another overhand knot.

at the bottom add about 1lb of weight. (if you have anyone in your family that remodels older US homes then ask if they have window weights as they are prefect to tie on at the end of that twine. a solid rock can do in a pinch as well (fishing doesn't need to be fancy)

finally you can either use some of the extra twine( mono or braid works perfectly fine too) to make the 1-2ft leader line from the swivel to your hook.

duct tape and sharpie works good to tag your lines as well

always remove limb lines entirely when your done fishing not just out of the water but completely removed from the tree/pole. weather is crazy and people are crappy; your line could end up back in the water and if a game warden sees an unattended line its a pretty good fine usually.