Hello,
Having read through your brief for this project, it certainly looks like one I would like to get involved with. It is very useful that you have provided such a detailed document and as you suggest, it may be possible to base the new file you require on your existing one, so it would be great to get a copy of that if possible - perhaps with some sample data in it...
I have many years experience developing with FileMaker Pro and currently do a lot of work providing solutions for use on iPhone and iPad using FileMaker Go, which at its current version 13 is truly a remarkable app, and allows me as a developer to deliver highly polished and accomplished solutions.
I am UK based, and am happy to communicate throughout the project using Skype, FaceTime, email etc..
I look forward to hearing from you.
All best,
Sky