$1.$ the current ordering process $-$ using the current rate from the current shipper

$2.$ and then using the new proposed rate from the current shipper

$3.$ for EOQ $($Yes$,$ you will have to calculate EOQ first$)$ use the lowest cost shipping option.

$4.$ Min order quantity for Trans Eastern Trucking

$5.$ Min order quantity for Northeastern Railroad

And then:

$6.$ Recommend the order amount $($in lbs$)$ needed to obtain the lowest TCO possible and the

transportation vendor that you will use. And Calculate the TCO $ amount for this amount.

$7.$ What is the reasoning behind this order quantity being better than your current order quantity?