Web development/software.

Hello, I'm looking to have either a web based or windows software built that I can import or upload an excel spreadsheet that will have my social media posts that I want to schedule. Each row will be a new post. One column will be the image, another if I want to tag someone, another for the post, and another will be a comment which will contain hashtags. I have multiple businesses so it will need to be able to handle multiple social media profiles for example, I have 5 instagram accounts and I will need it to allow me to post to all 5. I need the system to be able to post to instagram, twitter, Pinterest, google+, tumbl, Snapchat, fetlife and facebook. I want it to be able to select multiple profiles across different social media networks to schedule at one time, for example for one business I want to be able to schedule instagram, twitter, Pinterest, google and facebook all at once. I want to be able to check a box to select which accounts and which social media sites. I want the ability to setup posts at specific times as well as setup posts to go on a schedule for example, I want to be able to check a box to have a specific post to post at 7:15 pm or be able to setup where a I have multiple posts in a queue and it will post one every 30 minutes during 7:00 am to 9:00 pm or whatever times I select. If you can not do it for 50-80 please don't bid