Experimenting is fun and fine! I look forward to your results.
If it were me, and it's not, I would aim for about a 2.75 gallon batch and split into three 1 gallon carboys (i.e. juice jugs). I'd probably pick a scottish ale recipe (60/- maybe) to keep the ingredients and hops very simple and subdued, and so it will showcase the yeast.
I'd pitch three kinds of yeast (red star ADY, fleishmanns ADY, and US05 as a control). I aim for fermenting them all around 62-64F - no higher. Honestly, I don't know a proper temp range for bread yeast so you might want to start it around 55-58F and start raising the temp 1 degree per day after 24 hours until you see fermentation starting, and then keep it there for the duration of fermentation.
It sounds like a fun experiment but I would personally choose three different dried beer yeasts to do this experiment in hopes of yielding three drinkable and enjoyable finished products (english, belgian, us05). But it would cost more money for sure.