Good Afternoon Sushant, I did notice a store in the temple but it looked closed and I did not want to step out of line only because there seemed to be a service going on and my daughter and I were being reverent in not asking to many questions. The really good thing is that they have a self guided tour screen that helped you understand the many points in the temple that were of interest.

Good Afternoon, I will be honest I do not know that.

There is no charges see this beautiful temple. You can ask for a guide to explain the architect and statues on the pillsars and it’s histiry

I agree that an hour or more is needed. We walked around the outside for the photo opportunities. It is absolutely beautiful.

I spent 90 minutes and it was sufficient

Not sure how busy it would be on weekends, but they have many well informed guides there. It's a large space to walk around, with much to see.

To me the temple is completely finished, with some painting going on for the walls and ceiling of the outer building that houses the temple - but that's mostly finished. There is much more building going up on the property. If I understand correctly there are classrooms and a museum sort of building being constructed. I don't know the timeline on these things. You'd do best to call the main phone number and speak with someone there for more accurate and complete details.