speaker stands suggestion required

I believe you want your tweeters to be at ear level. I made some stands like those years ago for some Boston Acoustics speakers and I also filled them with sand for a very solid speaker stand. :T

Make sure that the level of the drivers are ear level when seated at the normal position.

Hi

A high mass of the stands is always a good thing.
So, filling the stands with sand is an excellent idea.

I would also think about the feet below the stands.

That depends on the fllor construction in the room.

Cheers
Babak