OP is in a tough place with this car, high mileage not good for resale. MIGHT find someone that'll pay 5K, but seems that if you're DIY valve cleaning, and replacing waterpump, you have enough skills to keep it alive for quite awhile and drive it til it dies. I would strive to get DSG fluid changed first and foremost. I spent a bit over $100 on my last one and it was shit simple to do. Even at this mileage, it would be beneficial. Check the list of members near you that offer their services to give ya a hand.
Keep your spirits up, things will get better.