Starting Photography Business

Hi yall! A little help here please! 

Im thinking of starting my photography business and becoming  a sole proprietor in November, in order to deduct the inicial equipment investment, I would have to have a higher or equal income, which wont be the case by April given Im just starting. 

Will they pass it on to the next year? 

Should I wait until January to start my business? ( even if I purchased the equipment this year?)