Bengaluru, Oct 29 (UNI) Air-conditioning startup Optimist is targeting profitability in FY29 after raising USD 12 million, betting that energy-efficient cooling technology and product innovation will help it challenge established brands in India's highly competitive air-conditioning market. The four-month-old company is currently clocking monthly sales of Rs 3-4 crore and believes its existing capital is sufficient to scale the business to a turnover of Rs 300-400 crore before reassessing its funding requirements, founder Ashish Goel said here on Thursday. Of the USD 12 million raised, a little over USD three million has been invested in research and development (R&D), including…