1985 Pontiac Firebird manifold leaking?

Engine Cooling problem
1985 Pontiac Firebird V8 Four Wheel Drive Automatic 58k miles

I have a 1985 Pontiac Firebird trans am and after replacing the thermostat and the water outlet I noticed that there are minor very small deposits of antifreeze on the right corner of the manifold where the screws are. These only come out when the car starts in the morning ( assuming because the thermostat is closed ) but later on you don't see them if I wipe them off. My question is do I need to repair the gaskets right away or maybe a stop leak ( such as bar's head gasket fix or radioator stop leaks will do the job until I save some money to replace the gasket?
I keep an eye for water leaks into the oil and this hasnt happend yet and the coolant level does not go down one drop.

Thanks