Awesome
Enjoy the time you have with the kids while you can, they will soon be grown and raising kids of their own.
No expert here but just offering some advice from experience
1) DO NOT start learning to use a baitcaster with braid. It is a pain to get backlashes out of and I was a professional backlash remover
15# mono would be good, not too big but big enough to pick backlashes out. I kept a small crochet hook to help pick lashes when I started out
2) Learn how to properly set the reel for the weight of the lure. I am sure there are utube videos but basically tighten the brake (not the drag) and then start loosening until the bait slowly falls.
3) pull about 40-50 yards of line off the spool and put a piece of scotch tape across the remaining line, reel line back over tape. The tape acts as a stop and brevents backlash from going all the way to the spool
Braid is sooooo much easier to get out than mono. You have much more of a mess with a mono backlash. Mono kinks and then has to be replaced. I start everyone out with braid. Just spooled up two new baitcasters for my grandsons with 30-pound performance braid. It's the only way to go.
As far as #2 goes. set the brake all the way up to 10 (or the highest setting) Then set the spool tension so the bait drops from the end of the rod at shoulder level and hits the ground as quick as it can without any backlash. As a person gets better at casting, you can turn the brake down based on the weight of the lure you're using. But for beginners, this is the best way to start out.
