Here is a five minute chart of today's e-mini day session. A three day weekend starts tomorrow. Trading today is shaping up as even slower than I expected. So I am narrowing my range estimate to 835-850 (blue rectangle). The red dashed line is the high of 848 which was reached in electronic trading this past Monday, April 6, before the day session started.
I expect to see the e-minis trade at 875 sometime next week.