Mt. Bierstadt is close to Denver as well as Grays and Torreys. Also Mt. Elbert is nice hike as well.

Quandary would also be a good one to consider. You could stay in Breckenridge before and or after the climb. You can also get to the TH (like Yale) with a passenger car easily with a very short section of gravel road.

Woodie

Your profile says you are from Florida. One thing that takes a lot of in-shape people by surprise is how hard the elevation gain is at higher elevations. I climbed Sherman with several people who are in pretty good shape. It's only a little over 2000 ft gain, but half the group decided that the saddle was high enough for them. But then again, two of us decided to go for Sheridan, also, while we were there. As I remember, Sherman has a wee bit of exposure on the ridge, just before the false summit. But awesome views of Elbert, Massive, and a lot of the Sawatch range.

If you're near the San Juans and preferably the Lake City side, depending on your vehicle, Handies is scenic and a walk-up with no exposure to speak of. Good wildflowers, and a neat mountain lake, and less than 3000 ft of gain via the American Basin route.

If you are in the Denver area a good warm up/intro to high altitude it mt sniktau. It is only 3 miles round trip and climbs to 13,400 ft. It has very easy access from Loveland pass as well. This hike will give your group a good idea of what its like to hike at higher elevations

Yale. Spend a couple of nights at Hartenstein Lake during the week.

Sherman and add Sheridan.

Quandry was a great suggestion.

Princeton

Mt. Ouray is 29' short of a fourteener. Great car camping. The Colorado trail southbound from there is an awesome place to see elk.

You have to hike into S. Colony Lakes now so 2 nighting them with Humboldt woudl be awesome. 3 nith it and kids could do Crestones too.

The Democrat, Lincoln, Bross traverse is fairly nice and not too challenging