You've probably considered it but for $750 you can buy a suitable Stihl 362 Pro saw with 20" bar and fell them yourself. I do a lot of tree felling but last year needed to have 5 large spruces removed from next to the house where several power lines crossed through the yard. It required climbing, limbing and topping them. I hired a friend who has an arborist business in Ward. With two other workers he topped the trees, limbed and cut into fireplace lengths and stacked the slash for $500. Evergreen may be a little farther than he wants to go but you might ask Tom Wheaton at tnttrees.com.