Using the right tool is the key to success. Your application will be data-centric and will need to have encrypted fields and 2-factor authentication and group security. Using an IDE with all of these items build-in and pre-tested will expedite your development time.
Businesses that are going to convert older applications to new modern web apps want to see a proof-of-concept. With the correct IDE, you can prototype an application and present a working app within days of receiving the requirements.
Build apps fast by using templates and widgets Security, eMail, texting, Dashboard, reports, photo capture, Maps, document repositories, etc.
The right IDE will have all of this built-in so you don't have to re-invent the wheel.