If 5000 dollar would increase size of the kitchen and increase total square feet of the house, then go for it. You would get your money back because of the total square feet increase. And you spend most of you waking time in kitchen, a good kitchen is selling point and more comfortable. But if it only for better cabinet and counter top, don't. When they gets old, they don't worth too much.
Has second in-suit could be a good selling point. I would get there, if I have chance.