Is this e30 worth keeping?

hey everyone! i got a 1988 325i convertible just a few weeks ago from a dealership. super clean car, new paint, 112k miles, and it runs really nicely. the dealership told me there were no leaks, and i stupidly didn’t get under the car to check. took it to a few mechanics, and they told me my whole powersteering system is leaking and my engine oil pan gasket. turns out these leaks aren’t new and the dealership lied about them. i think im leaking coolant from somewhere, but haven’t figured that out yet. none of my fluid levels are really going down though which is weird.

i really like this car, but im worried about it becoming a headache, and im especially mad about the dealership lying. should i get my contract voided or demand they pay the repairs? will getting the car repaired at a mechanic actually fix these issues though??