I like your additude, "Don't fix it unless it's broken".
Obviously, the live well thru-hull needs to be addressed, looks like you're taking care of any suspect wiring, and if the transom is sound, you're good to go!
Since you have children, I have a suggestion. Have cushions made for the casting platform, and add a spray dodger. The kids will enjoy the boat more if they have somewhere to get out of the elements.
My family loves it!
Keep up the good work, and get out there and enjoy it!!
Lloyd