are u going to feed an army? so many boxes, keke, another suggestion is to use brick to enclose an area on the floor , say, 10x3 ft, 1 ft height for planting, as you got space to do like this
i think you need at least 15-18 bags of soil to fill up those boxes, 黃花沙around 15 dollar a bag, = 270 dollar, and then u need 15-20 catties of organic fertilizer to mix with the 黃花沙 as base fertilizer....7 dollar a catty......140 dollar,承惠410 元