Hi There,
I have gone through your project description and the link which you had mentioned in it , i believe my team would be perfect fit for this type of job.
To determine estimated time duration a , i would be needing one important thing from you to determine all these , that would be FRS(Functional Requirement Specification).
If you could just drop me a message on freelancer chat then we can start the initial stages of our conversation and make you sure that our team is capable of doing this job.
Have Worked with successful and experienced team of developers who have experience in Wordpress, Joomla, PHP , ASP.NET , Mobile Applications , Python , software and website development and can start the project right away also if needed.