first time visit to Niagara Falls (US side) - change itinerary from 2 days to 1 day?

Hi, we have a US northeast trip coming up in June. We'll be visiting Niagara Falls on US side & planning to do all the touristy things (Maid of the mist, Cave of the winds, Observation tower etc.), will have a rental car. We have an option to change our itinerary a bit as follows

• current plan: arrive BUF Tue 10pm, 2 nights stay @ Niagara falls, depart BUF Thu 1pm
• proposed change: arrive BUF Wed 11am, 1 night stay @ Niagara falls, depart BUF Thu 1pm

original plan of 2 nights was to have sufficient time to visit the falls. but after bit of a research, it seems that US side visit can be covered in 6 to 8 hours. With sunset times around 9pm in June, that should give us sufficient time on Wed & also couple of early morning hours on Thu before our 1pm flight. does this make practical sense? or its making for a very compressed, unrealistic itinerary? thanks in advance.