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. I DID run Google for first 10 years and built business to million....that was years ago. I no longer have any desire to be in charge of Google. I just know what's possible with proper marketing. I did set up Social Media accounts but haven't used them for years...and are inactive. I've had my web site for 30 years. It is time to focus on marketing...and do it with ROI knowledge. If YOU are an expert in marketing, You are who I need. And, I need it soon. Normally my business picks up after Labor Day and that is upon us. I have no idea how many hours a day or hours per week or hours per month you need. Goal: SALES with an acceptable ROI. Hopefully you have the experience needed to outline what you believe would be best marketing plan that achieves sales with acceptable ROI. If YOU are what I need, this could easily be a long-term relationship.