How to evaluate the complexity of the work, the composition of specialists and the system for a service project?

Question

Programming

Service functions:
1. Create accounts (or login via social networks).
2. Creating, editing lists and positions in them
3. Exporting lists to an excel file
4. Collaboration with other accounts on one list.
5. Sending and receiving lists by mail (within the service)
6. Viewing received lists.
7. Data calculator in lists.
8. News section
9. Help section
10. Mobile application.
11. Synchronization with a mobile application.
Something like a shopping list.
You will need:
a designer - will develop something, how it will work, make layouts a
layout designer - a programmer will make a site out of layouts
- will make the site work
(mobile application later, so it is indicated in the functionality only to understand the scale of the task)
Who else?
Will common control systems be suitable for this project? - WorldPress, Drupal…. (?)
What is better to do?

Answer 1

Will common control systems be suitable for this project? - WorldPress, Drupal…. (?)

It's easier and actually more profitable in the future - to write from scratch. Frameworks to taste or even from scratch.
According to the list, there is nothing supernatural, but again, the complexity will depend on sub-problems in logic - for example, item 7. it can be like a simple calculation of the amount in a column, or it can be a well-wrapped business logic with a formula for three screens.
In general, what you want to know is learned and calculated from the TOR - which you provide to the developers.

Answer 2

Based on the detailed TOR, the labor intensity is calculated, and from it and the set deadlines - the cost of the work.
Using freelancers is one risk-adjusted price.
Registering an LLC for this business, renting an office and hiring full-time specialists is a completely different price.

Answer 3

Thanks for the answers, of course, I want to first make a working prototype as cheaply as possible, launch it, and then go all out with employees and other things.
Therefore, there are questions about the composition and qualifications of performers.
What does a programmer need to know to complete this task?