I'd worry about fixing your site first. Also, conversion rates and usability are two completely different things. Usability can affect conversion rates - only

I'd worry about fixing your site first. Also, conversion rates and usability are two completely different things. Usability can affect conversion rates - only relationship. Usability is also not something you're going to diagnose adequately without trained human eyes. You need to know the field better if you want to successfully build a product in that domain.