Expert Social Media Marketer needed ASAP!

Need Marketing Expert for Facebook, Pinterest, LinkedIn, Instagram and Google. I am NOT a marketing expert nor do I want to be. I'm the owner and am looking for a marketing expert. Should I market with all 5 social media or only a few? I've used Google since beginning of Google... (Budget: $15 - $25 USD, Jobs: Digital Marketing, Facebook Marketing, Google Ads, Instagram Marketing, Internet Marketing, Linkedin, Marketing Strategy, Pinterest, Social Media Marketing, Twitter)