Need some help with converting to organic fertilizer

[ARgardener]

Okay, per soil test, my vegetable garden needs 1 lb per 1,000 sq ft of Nitrogen ( and 1/2 that for legume crops)

The synthetic fert recommendation is 2 lb urea (or 3 lb of 34-0-0).

I want to use soybean meal and alfalfa meal for my nitrogen requirements... this is feasible right?

According my (unreliable) math, I'd need 21.6 lb of 3 part soy: 1 part alfala.
Or 23.5 lb of 2 part soy: 1 part alfalfa.
Is this right?

Soybean meal: 7-2-1
Alfalfa meal: 2.5-0.5-2

All input greatly appreciated!