$350,000 in hand and invest or buy existing Business

[Nimster Win]

Hi,

 I Live in San Diego CA and have inherited 350,000 after taxes . I lost my job after going home to take care of my ailing dad who passed away . I sold his my share in business in India and moved back here. There is a cafe that makes 480,000 a year in a prime location and the owner nets 80,000 a year and works only 20 hours a week. The asking price was 275,000 and I bought it down to 250,000. Is this a good price as most cafes sell 2-3 times net?? Or should I invest in the stock market in Amazon, Netflix, Boeing and a couple others . Thanks ( Also have $5000 a months that will come from salary from a business in India . Thanks