Quoting blessed with girls x3:" Where my natural-birthing mamas at? I need some encouragement. If you don't have something encouraging ... [snip!] ... that is where I am at. Big babies do run in both mine and my husbands family, both our grandmothers had 12 lbers vaginally."
It's always a good idea to eat well and avoid excess sugars and carbs. Try not to focus too much on keeping baby's size down and focus on your general diet and health. Try to eat well for the overall benefits. Home birth is an amazing option and for a healthy mom and healthy baby you are at a lower risk than you would be otherwise. You are making a great choice for you and your baby