We have checked your requirement and based on it we have prepare a rough estimation for the CMS. It's of 136 hours for now. Please check below link for the estimation.
Estimation link : -
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We are always trying here to finish work in as less hours as well.
Please let us know, If We have missed any features to consider in our estimation. So, we can add the same to get you accurate estimation, timeline & cost of the project.
Let me know if you have any query or concern, so we can check it.
Waiting for your positive response!