Been kicking the can down the road long enough and have to do something. House is appr. 2100sq ft, built in 1996. Unit was replaced in 2009-2010 with a 410A system, gas furnace. Suspected leak in evaporator, has been low on refrigerant every year the past couple of years. A friends HVAC company is coming this afternoon to look and give me options. What would you do?

1) Replace everything with a heat pump system
2)Replace AC side and retain current furnace
3)Replace AC and furnace
4) Buy a window unit for every bedroom and spend the rest on ribs and Budweiser