There's no real unlimited, unmetered is reasonable
There's much article there, why don't install hypervm first? it can be used as another control panel instead of cpanel
Are you using leaseweb services?
Less than 100/year? it better to pay monthly with some upgrades,
That's too much in taking memory
Why dont bought a vps? it cheap too
There's many opensource script, why don't donate to the developer?
That's difficult, the the range is 10-20 USD
How much is your budget?
It's hard to get with that price, instead of unmetered banwidth
Just get a VPS to make your site better (offshore prefered, because they usually don't limit the resources)
You can use bot, but eventually this case is blocked
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