Fixing it up will get you a higher price. I personally think it is a waste for the sellers to put in new turf and the buyers rip it out to xeriscape, but hey it creates jobs right! Also putting in beautiful laminate only to have owners rip it out later (happened to me) is somehow just wrong or so it seems. I’ve seen where spending 5k can get you 20k more but one never knows. Banks never put money into a house they sold, but I have seen dumps fixed up really well and if it was my neighborhood that would be want I would want you to do. Personally I would do everything except the kitchen, people are just to hard to predict in what they want for a room that most don’t even end up using much.