Arrowchat integration and customisation with wordpress site

Hi ,

I’d like to implement arrowchat(https://www.arrowchat.com/) in my wordpress site and make few customisations as follows:

1>Install the chat program and integrate that with my wordpress marketplace website seamlessly
2>Ensure all features (chat room, word censoring etc.) works well. Do multiple tests from all sides
3>Customisations include :
a>The wordpress site is a freelancer marketplace. We should only let buyers chat with freelancers. It’s a simple requirement
b>Blacklist or whitelist users ,so communications are restricted.
installation ? One you confirm i would go for the Business package. Please
confirm if you are ok with this.
c>Integrate chat with the existing messaging system.

4>The implementation should not impact any existing website and features in any one
5>Ensure speed of the website post implementation is not impacted in any way
6>Make the implementation portable. In future, we may need to move the chat program to another website, hence ensure the chat program implementation is completely portable.

and other few minor modifications

Thanks
Krish