Looking to Pay for Twitter Bot

Hey, I am looking to pay for a twitter bot or either pay someone to design a custom bot for me.
I would like a bot that allows you to use multiple different twitter accounts with it and has the following features: auto-favorite tweets based on keywords, auto-retweet based on keywords, follow/unfollow users based on keywords.

Does anyone recommend an already existing bot to purchase or is willing to custom design one?
Thanks for your time!

How much would you be willing to pay for a bot like this?

TweetDemon can do all that.