FB Comment to Messenger Software

I was wondering if you might be interested in a job. Basically, I need a piece of software from where I can hook up my FB accounts and Facebook pages, and send private messages to the people who commented on my posts. The thing is that it has to be done by replicating the mouse and keyboard, since using FB's API, or chatbots for that matter are very sensitive. The bot needs to be able to log into each account with a proxy. We can use FB's API to fetch the comments tho. I need a function so I can choose how many seconds it should wait after sending a message. Like between 5-7 seconds. The bot must have a function so that profile 1 can choose to send PM's from 0 to 1500 comments. Profile 2 will skip the first 1500 comments, and stop after 3000. I also need a function so the bots don't send the same message more than once to a person that might have made 7 comments for example. One of the biggest issues I've encountered with a Google Extension I've used for the purpose is that when profile no. 1 has to start from comment no. 5000 and stop sending PM's after 1000 comments which are 6000, then it has a tendency not to paste the message, and send it, due to the fact that Chrome uses so much ram, even though it only uses 60% of my computers ram, then it's still like that the browsers lag And the second issue is that the bot scrolls through the comments very slowly. If FB profile no.4 has to start sending PM's from comment number 5000, then it takes ages to get there.