Greetings,
I have read Project Description & Skype is surely not a problem, as our team already communicating with all the clients. However, keeping the overall requirements in mind, I am afraid that our estimate is way higher than US $600, which is your set budget on Freelancer website, so would you be flexible in it?
Our current bid is just a placeholder since Freelancer requires to submit the proposal but once you respond us, we can then finalize it.
Please check out our Freelancer profile https://www.freelancer.com/u/leadconcept.html, as we have many happy clients and let me know, if you want to see some of our recently developed projects.
Look forward to hearing from you and talking to you further thru' Freelancer private message board.
Regards,
YK
LEADconcept