wow, what a laugh. find some toothless idiot to do the tree work. since i'm hoping to take the arborist test next year i geuss i'll have the lose a few teeth. St. Augustine ( Stenotaphrum secundatum L. ) is a warm season grass and would not survive in the norhteast since it requires a cool season grass. find out what type of maples they are, reason being in my area the lawn, landscape and trees are 20% of the property value if not more. some sugar maples could be upwards to 10k a tree if mature and in good health. have an arborist look at the trees and see what he would reccomend, either trimming of the trees or removal.
also, keep in mind if you do remove the trees and you have a fine fesque or a creeping red fesque that that type of grass cannot tolerate constant sun and will thin out and eventually die off.