RE: Sunlight
Most people say 4 hours of sunlight will grow anything. I have a plot on something similar to yours, except it's a narrow gasline running through the middle of the woods (20' wide). The sunlight was filtered at best so I went in and cut back some trees along the gasline to get more light in there. I made sure not to cut oaks, just maples 10" in dia or less. I believe I cut8-10 down yesterday.I am going tomorrow and taking a pole trimmer and cutting back limbs up to 20' high all down the plot in some of the bigger trees.
I would experiment. Usually clovers are pretty shade tolerant. Try it this year and if it doesn't grow, if possible, cut back some trees if you are really serious about growing something in there.