Greetings,
I can modify, including the built in plugin in this theme, like most popular post, related posts, etc.
BTW, I am full time freelancer, developer and designer , so I can give my full time on your project only. As I have great expertise in WordPress programming.
Definitely, I will use "Freelancer Desktop App". I am also very honest with my work and my clients also.
Can we have a detailed discussion regarding this?
Regards,
RC.