Do I need to repair or replace my car?

I have a 1993 Toyota camry with 200,000miles. The things that i need to repair is front and rear engine mounts, oil pan gasket, valve covers, piston rings, timing belt, front seals, water pump, antenna, middle seat belt, driver side and penger side window regulators. I have a small oil leak and frame damage to the underside of my car. Are these major problems? Should I just replace the vehicle with a new car? I have already spent about 900 dollars in 4 weeks getting a tune up and brakes. I need something dependable for my children and I. I have an option of getting a 2005 pontiac grand awith car payments within my budget. I just don't want to keep spending mone if the car has ran its course.