You have (3) good places to fly there.
The first one, as you mentioned , is just West of Windsor Locks Class C - from the Surface. Just south is the Class E - from the surface, (lavender dotted line), that protects the instrument approach into Windsor Locks. You are also surrounded by Class E - bottom @ 700 AGL until just East of Barkhamsted Reservoir, where it changes to Class G - uncontrolled. You would have to notify Simsbury Airport, since you will only be about 3.5 miles away.
The second location is in Class E - bottom @ 700AGL. You will need to watch for the Glider activity & the Parachuting that occurs @ Danielson Airport. You will want to notify them also, since you are less then (3) miles from them.
The third location is good also. Class E - bottom @ 700AGL. You will want to notify Robertson Airport, as you will only be 2.5 miles from them.
The link I am giving you is able to be toggled from the upper left hand corner, for satellite view, (like Google Earth), to locate your spots exactly, then to FAA Sectional charts to familiarize yourself with the airspace.
VFRMAP - Digital Aeronautical Charts
Three nice flying spots.
Any other questions, feel free to ask.
Enjoy.