Hi Eporedia, and welcome to the forums!
Ask away! I'm sure I speak for us all when I say that any cooking/shopping related questions are welcome.
I doubt that making smaller meals in the crockpot would be a problem, but I have a small one and use it rarely, so will leave that for others to address.
Where I can probably be of more help is with the breadmaker. I don't have a recipe for sprouted flour bread, but I did go through a phase where I made all my own bread, pretty much. I've slacked off the last couple years, but have been thinking about trying to start doing it again.
So, I've not made pizza dough, but I've used a bunch of other recipes for bread or bread type products that you start in the bread machine and finish in the oven. Including (once!) bagels. Which were good, but a fair amount of work. They had to be shaped, rise, boiled, flipped in the boiling water, but not left too long, then taken out, brushed with egg, sprinkled with stuff, and finally, baked. Yummy. But time consuming. I assume pizza dough would be much easier. If you have specific questions about a recipe, let us know - I'm sure someone will be able to help you figure it out.
Also, re: yeast. I've had good luck with Fleischmann's, and never found a significant difference between their regular yeast and their bread making yeast. I'm sure any other brand of yeast would be fine. But I would suggest that if you're planning to use your bread machine regularly, that you consider buying yeast in jars rather than envelopes. I found that more cost effective. According to one website:
Typically, one envelope of dry yeast contains 2 1/4 teaspoons of yeast. This package is also equal to one 0.6-ounce cake of fresh yeast. One envelope of yeast is usually enough for a loaf of bread made with 4 cups of flour.
Bread flour is fine, plain white flour is fine, whole wheat flour is good. Rye, buckwheat, soy and other flours all can also be used, at least in part. Plus things like oatmeal, and corn meal. For health and variety and taste, I would absolutely encourage you to work with a variety of flours and meals. I tended to make everything at least partly whole wheat, and preferred the recipes I found in bread machine cookbooks to the ones that came with the machine. It's been a while, but I still have the cookbooks, so let me know what kind of stuff your family likes, and I can dig out the books to give you a couple of recipes that I've tried and enjoyed. Might motivate me to make something too, eh?
Also, if you've used your bread machine in the past, I'm sure you've realized that it produces bigger slices of bread. So you may end up eating a little bit more bread. Or you can use one thick slice of bread, cut in half, to make a sandwich with.