My Shared hosting question based on my situation

[DonAced]

Okay I have my 3 website hosted on a 1 baby plan, I know that is not wise.

One main website
2 sub domains websites

So I have 3 wordpress install on my hosting account

I get around 4,000 views per month, fairly new, all this was setup around 3 months now.

Shortly I am going to work on a client website site, and I offer my services including purchasing a hosting account, which will be hosted separate from my website.

So, I be paying 2 baby croc account shortly . One for my Client and as mention above and my website

* So the question hit me , is it better I get a VPS hosting account ? incase I get more custom website jobs to do?

* Or stick to paying for separate hosting for each client?

* Is it better cost effective to get a vps account based on my situation

* On average how much wordpress installed websites can be hosted on a vps account?

Looking forward for some advise , thanks!