I am a BKA on my left leg and have been jumping again now for about 18 months. (also 56 years old btw). Jumped in the military 30 years ago.
I just wear a safety strap made of webbing and velcro to ensure that if my leg should come off (has once with an unstable opening) that I don't lose it altogether. Let me know if you want details and a pic.
Othewise I land normally and usually stand up, but am always prepared tp PLF. Do run off ever now and then, so maybe PLF for you would be advisable.
I have also just bought my own rig and will not load it over 1:1 Check my profile and you can get the details.
Good luck in convincing your wife about getting back into the sport. If you play it cool and be safe (always), really no problem.
I am also a right bka, I use a sports support on that leg just because my knee is in not that great of shape. I am at a 1:1 wing loading and will stay there for a while. I can run my landings out if I have to but I usually stand them up. I dont have any real issues because of my leg!
Neil - I'd love to see a picture of the safety strap. If you upload it to the forum, it'll become searchable knowledge. Considering that I don't have a backup leg yet, I'd hate to lose this one in a cornfield.
Sounds like the hardest part of jumping again is going to be convincing my pregnant wife that jumping is a good thing!