It's not a good idea to feed just one food since what ever nutrition is missing, will be missed every meal, and whatever is bad will become the norm for every meal. Even trace elements can be different from food to food.
A possible list could look like this: night crawlers, crickets, massivore, NLS 7MM, Hikari sinking pellets, pollock, shrimp, squid, codfish, spinach, peas, algae flakes. Overall, low fat, lots of vitamins, good protein levels, a few veggies, etc. If you prefer pellets the most those could be the staple (2 out of 3 or 3 out of 4 meals), with everything else as a third or fourth meal. Even pellets, I'd alternate a bit so it's not the same pellet 100% of the time, although some of the pellets seem really well balanced.