What is best strategies for frontend user registration and frontend post

Hi,

I am working on a site. I want to allow users to register as a basic member. They can post jobs for free as a basic member. (these jobs will be viewed for free without login. but posting requires login.)

Then if users want to use premium/other functions, then I will prompt them to pay(upgrade) as paid member.

I have several options:

1. Do hard coding for everything (frontend registration, payment, custom post type, frontend post pages)
2. use ‘s2member’ plugin for registration, use ‘advanced customs fields’ plugin. code my own custom post type, code my own custom post pages

3. use ‘formidable forms’ plugin, use ‘s2member’ plugin, hard code everything else

What are other options I have? What should be best approach?

p.s. I would like to use as less ready-to-use plugins as possible.