I have 7.5 acres as well, and its pretty much all trees, there is a mixture of pine, spruce, poplar, and birch trees. We cleared and fenced about an acre for now, and I have 2 horses on it, and it requires feeding hay year around. Next year we will hopefully fence off the rest of it, and maybe clear more. Once we start clearing more land, cleaning up the deadfall, mulching the stumps down, and seeding/fertilizing, and letting the grass get established it will be at least 2 years before we can turn the horses loose on it. We have decided to let the evergreens stay, but all the deciduous trees are going bye bye, due to the fact that they are so invasive and take no time to grow back and take over new pasture.
I don't think a logging company would come and take the trees out for you, 7.5 acres is a small piece of land, that the expense for them to take those trees, would not leave any profit in it for them.