Dear Sir,
I am pleased to apply for this project.
We are professional developers and designers, and have done some extensive work in web development and cross platform application development.
We can develop this portal for you in a form of website and and application for both Android and IOS.
The time duration for the website will be 10 days at most and budget should be 800 USD.
We will design and develop cross platform application based on the 4 pages document you have attached, and the application will hopefully be completed in 30 days and next 5 days will be used for the reviews and final maintenance.
We will also provide maintenance service at a very low cost for the future years, to keep this portal up to date and professional.
If you would like like to have an online discussion with me, please do share your SkypeID and we can discuss this further.
Please let me know if you've any kind of queries and questions, I'm all here to help you out.
Many Thanks,