I can also do it for you if you drop me a DM. I´ve grown multiple Accounts with this method. Even though I have to say that the Engagement depends on your content and not so much on this growth method.
If I were you I would work on time management skills, because I don’t know how you don’t have enough time to continue growing your accounts. I have a full-time job too, and I can still manage thousands of accounts. It would be a lot better for you to do it on your own, you would learn a lot plus you wouldn’t spend so much money by hiring someone. Think about it. If you really can’t do it, then sure go on and try to contact some reputable members.
Don’t get me wrong, I’m not a doubter. I am a big dreamer and I always strive for the impossible, because that is where true growth begins.
But since I hear out that you are not so experienced I just want to make sure that you have clarity. That’s why lets do some maths.
You would like to have 2k followers a day. That’s 60k a month. For that you need, let’s say 200 accounts. 200 accounts doing 500 follows per day x 30 days a month = 3 million follows a month. Let’s say you have a 15% follow back ratio on your slaves and 15% of them are going to follow your main account too. The percentages can be made higher but lets take an average number to keep it simply. 3 million follows x 0.15 = 450k. 450k x 0.15 = 67.5k. So around 150-250 accounts will do the job depending on the settings, your main pages, content, etc.
So you will pay for proxies, software, PVs and maybe for a VPS and accounts unless you’re creating them yourself which I do not believe because you do not have that much time.
Calculate these costs which are not small. And then compare with the price for someone else setting it up for you. If you are very aware of the costs of investing, then you might do it yourself like @JackGagger said.