Sounds like your normal ways of feeding your family will work well for Eko, too.
Many people do not feed peanuts to birds because they are so prone to harboring fungi. My birds don't get much wheat because I am allergic to gluten myself. They survive without it. If there are allergy issues in the members of the household the birds won't suffer as long as they have plenty of other variety.
I do feed organic pellets that contain gluten because I can't find organic bird foods that don't contain gluten. I just have to be very careful handling the food, especially the dust that is left when they eat them. I do have to caution, though, that I heard the other day that some bird pellets contain peanuts. I'm not saying what I am about to say is certain, because I'll have to check out the ingredients, but I think when I heard this discussion it was said that Harrison's is mostly peanut based. Well, if you have dealt with a severe allergy for three years you already know how to check labels and exactly what is safe for your child and what isn't. I know some folks have to avoid the possibility of breathing in or even touching peanuts, and some are not quite that sensitive. With me, I'm okay with completely prepared gluten containing products as long as I don't ingest any gluten or breathe it in. So I can make a sandwich for someone else with regular bread, or feed the birds the pellets. I can't, however, cook with wheat, barley, or rye flours or handle any products in which the stuff could become airborne or visit places like a bakery or grain elevator, and wheat harvest around here is a bad time of year for me. Avoid whatever you need to avoid for the safety of your son, and your bird is not going to suffer at all.
I soak kidneys and the like for eight hours before cooking them. Yes, most of those have to be cooked before ingestion. I know there are supposed to be some quicker soak methods, but I soak them for eight hours or so. I don't know the answer about actually sprouting them first. I was given a link to a great web site on here or on the linnie forum, not sure which, called the Sprout people. That site gives all the information you would probably ever want to know about sprouts. The information is for people, but I figure it is applicable to birds.
I'll look that up for you and try to post it later.
The only thing that you probably would want to do differently for birds than what you already do for your family is to avoid some foods that are ok for people but not for birds. One example of that is celery. Another is onions. Again, I believe there is a thread on this forum that lists foods birds should not have. You've probably already found it. I'll look again, too.
Your bird probably already eats better than most of the people reading this forum.
I'm sure she eats healthier than I do.