altering recipe to add spinach
I just bought a bread machine on Craigslist and want to make some whole wheat spinach bread. I've never used a bread machine and have only made a VERY few loaves of bread ever. Here's a recipe I found that seems like it would be delish, but there's no spinach in it. http://allrecipes.com/recipe/flax-and-sunflower-seed-bread/detail.aspx?scale=15&ismetric=0 
I've read how to prepare spinach for bread -- cook it and drain and then puree. I also would like to add a little garlic to that mixture, cooked with the spinach. I would like to use nearly no sweetener because I avoid sugar as much as possible. Could I substitute Truvia for the honey? If so, would the added moisture in the spinach sub for the lack of moisture in the honey? Or, will omitting honey ruin the bread or will it taste terrible without any or little sweetener? Can I substitute olive oil for the butter? And if use "butter" can I use margarine instead? I try to be as vegan as possible. So, any info on these issues? Oh, and what would be an appropriate amt of spinach to use? A friend told me to use one bunch, but bunches vary in size. Can anyone help me out?