holy jesus! you can get malted barley shipped from more beer for a buck a pound or less, if you go with viking! i've got 3 feed stores around here, 2 carry it in stock, for either 12.99 a 50lb bag, or 13.99....i think the other one quoted me something like 9 bucks, but i'd rather not trouble them to order it....even when i was in N.Cal..the feed store would order it for something like 15....
i called double m too on my journey, they just said S.O.L.....so i think you're out a luck with home malting....we gotta start thinking, adjuncts....i'd say at this point brew a few batches with viking malt, then see how much rice you can get away with, without having trouble with the sparge.....or find a garden shop that sells 50lb bales of rice hulls, i used to be able to buy a 50lb bale at the garden store for $8....but sounds like you're not living in brewing friendly territory....
edit: what's your brewing equip like? when i brewed my rice beer, i'd put the rice in the sparge water and leave my 15 gallon pot in the oven overnight at 200f...because rice doesn't gel as low as barley starch, look into cereal mashes....
edit 2: this is what i expect...
https://nrsworld.com/products/barle...-2-viJLZ9h37vh30xeBCbqmGoNmrMJoIaAl6QEALw_wcB