My plan for my 30 gallon tank. What do you think?

That's some good planning ahead. But beware that the Alternanthera may need more light to become really red. That's a good feeding regime, but if you are going to have some loaches, make sure some of the food sinks so the loaches can't starve. I'd add only three to four more Kuhli loaches, as they look very interesting with their snake-like body shape with gold and brown bars. That's probably the maximum. If you want loaches, get some sand, and put a big pile of it somewhere in the tank, so they can burrow. But kuhlis are pretty much nocturnal, so let some food drop to the bottom right after putting the lights out. If you want to see them during daytime, you'll have to coax them out with frozen or live bloodworms, their favorite food. Clown Loaches do appear during the day, but they are very sensitive and grow to a large size.