Time and effort estimate to create a blog platform like blogjob

Hi, can anyone here give me a time and effort estimate to create a blog platform similar to http://blogjob.com

I see they have an awesome theme and some really integrated plugins from wpmudev.

I want to create a similar site for Indians on http://www.Blogging.co.in but I can't get around all the plugins that are used by them and it looks like a huge task.