You didn't say where you live so we don't know the weather. Pines provide thermal shelter that is not available from hardwoods. The property I hunt has fields, hardwoods and a big stand of mature pines. When it is real cold and you walk into the pines there is a big difference in temp. The deer use these pines for shelter from both cold and rain and when they are presured both on the property and surounding properties, they go to the pines. If you have a choice, I would thin the pines instead of taking the whole stand, The choice is yours and either way, I doubt you will lose your deer. Sounds like a nice property.