(CodeIgniter or Laravel) connecting the Payment systems of the CIS and minor improvements

Hello!
You need to connect payment systems such as QIWI, Webmoney, Robokassa, Interkassa and maybe others to have the finished engine on CodeIgniter or Laravel (there are 2 engine).
It is necessary that, after successful payment, the buyer downloaded the file (theme marketplace – Themeforest Similarity)
Suggestions in a personal email indicating the cost of the work. Will consider all options. The project is in test mode.

Of modifications on CodeIgniter:
We must conclude rewards for sellers – Badges (* Similarity Themeforest)
and ability to multi-select the categories when adding a product:
(for example:)
- CMS
--- Wordpress
--- DLE
--- OpenCart
--- etc.

- Subject
--- Movie
--- Games
--- Sport
--- etc.