Plugin For Selling Advertising Space

Hi,

I’m struggling to monetise my site. Recently I added Google Adsense then removed it when I found it had increased my site load time from about 1 second to 4 seconds. I’m now looking to sell my own advertising space but can’t seem to find a good plugin for this purpose. The nearest I’ve got so far ia a plugin called AdsPro from Codecanyon but it has had mixed reviews.

Has anyone used AdsPro and if so how do they find this plugin?

Thank you.

Derek