RIP to my oven-Please help

Hi Everyone, my LG electric oven range has decided to short circuit on me (I’ve already replaced the relay board 3 times and it keeps frying) and I am in desperate need of a new oven, and fast – need to bake 15 dozen cupcakes this weekend. Can anyone recommend a good home oven that will sustain marathon baking hours that I must put it through for my business? Thank you in advance for your help.