Make a budget estimation of a fork of rarible.com and chiliz.com/

We are looking for a experienced Solidity Web3 developper to estimate the task needs to be done create a fork a rarible.com like projet.
We need to have an estimation of each task cut out in maximum one/two developer day.

With this smart contract :
https://etherscan.io/address/0xcd4EC7b66fbc029C116BA9Ffb3e59351c20B5B06#code

The front end design will be changed.

The same need to be done on chiliz