You've already gotten some great advice! Just a few things. I'd remove the spinach from his menu, as it reportedly has properties that tend to block their body's ability to absorb calcium.
Strawberries I also tend to avoid, as I've read that they can sometimes get a fungus that is extremely hard to spot with the naked eye. I haven't read as much on this, but tend to err on the side of discretion when it comes to possible fungal contamination.
In the interests of sharing information, here is what I currently feed Maya and Jolly (my ekkies): I tend to provide between 6 and 12 types of food per feeding (2 meals per day), weighted heavily toward the veggie side as only 1 or 2 of the food selections in a given meal are fruits.
Various sprouts, carrots (a part of every meal due to the high content of beta carotene - precursor to Vitamin A), bell peppers (red, yellow, orange and green), jalapeno peppers, Jamaican Scotch bonnet peppers, chili peppers, squash (butternut, green and yellow), pumpkin (also high in Vitamin A), blueberries and pomegranates (both among the most nutritious of fruits), snap peas, broccoli (high in calcium), cactus pears, persimmon, starfruit, bananas, grapes, kale, turnips, radishes, brown rice, quinoa, cucumbers, endives, dandelion (nutritional powerhouse offered at every meal), sweet potato (cooked), red swiss chard, granny smith apples, papaya, African horned melon, hominy, oatmeal (sans sugar or flavoring), kiwi, barley, calendula flowers, fennel, chocho beans and garbanzo beans, as well as Volkman's Fancy Soak and Simmer for the majority of their legumes and grains.
For food accents I'll add one or two types of the following as well: star anise, milk thistle, elder berries, rose hips, hibiscus, bee pollen and chamomile flowers.
Twice a month, I'll give some hard-boiled egg (with the crushed shell for calcium). Slightly more frequently during a molt.
For their training treats they get an assortment of unsalted nuts (one or two per bird in a given day, broken into small pieces and fed as rewards through the training sessions). And for their "goodnight treat", up to two teaspoons of seeds.