Add 2 of the 1.1lb to your cart with Set and Save (cancel this after the order is shipped). There is a BOGO 1/2 off, so you will have 4.4lbs total in your cart for a total price of $29.09, then you grab the $10 coupon here:
This brings the total down to $19.09! You can add some Vitacost brand filler items to get to the $25 free shipping mark, otherwise the shipping is around $5.
Here are some good low cost filler items that also get the BOGO 1/2 so you can reach the $25 mark.