No problem, I'm not an expert but I'll sure try to help!
Cal loves boiled eggs and shell! I know it's weird....like cannabalism, right? haha! It is however, VERY good for them
Pellets are indeed the way to go. My girl loves her kaytee exact rainbow. We tried zupreem but she absolutely loathed that. We tried a brand of pellet that we could actually find in the UK in a shop....she didn't like that. Harrisons is the best you can get apparently but after the zupreem incident, I didn't think it was worth trying them.
Cal loves her kaytee because it tastes fruity(it smells DIVINE)and she troughs it down. I'd rather she had that than some awful seed based mix because she's at least getting the right nutrients.
I give her a bowl full of that and she has maybe 4-5 of her nuts broken up. I also give her a few sunflower seeds but not too many. I make sure she always has pellets in her bowl because she's just a baby.
Additionally to that, I give her fresh veg and fruit daily. She usually has a little fruit mix in the morning mango/pineapple/melon/apple/grape (again, not all of them lol!). Then at lunch I usually give her a bit of cooked carrot and peas/sweetcorn/kale.
At dinnertime I maybe give her spinich/broccoli/pepper/sweet potato.....these are just some of her varities but because she likes to eat with us, I give her small portions of these throughout the day so she can lol.
It's important to rotate fruit and veg as well as not feeding too much of anything in particular. Kale and spinich are very high in Vit K which sunnies need as they are prone to blood clots as they get older. Those act as natures warfarin.
She also has oatmeal, scrambled egg, boiled egg, plain popcorn, plain wholewheat cracker, fresh coconut.....these are sort of once a week things. Not ALL of them in a week....just occasional.
These are the majority of things that she enjoys. There's plenty she doesn't enjoy like fresh papaya and banana....I think they're too mushy to hold lol.
She also has cuttle bone and mineral blocks.
Hope that helped you somehow!