I am currently baking about 20 loaves of bread per week.  there is a demand for more but i have an oven that only fits three loaves at a time and a mixer that maxes out at 14 pounds of dough.  20 loaves a week is my max because i only have 2 days in which to do the baking.  but i would love to be able to do more.  

I cannot sink 1000's of dollars into this endeavor but wondered if there were any suggestions for upgrading to a bigger oven and  bigger mixer.  without buying an extremely expensive, large scale option.