You haven’t mentioned the mileage of the car.
Not having seen the car in question, I couldn’t say if you’re better off looking for another car.
But regardless of service history I would err on the cautious side and replace the cam belt etc, unless you know for sure when it was last changed. However unless the are signs of head gasket failure, I’d leave well enough alone, unlike the cam belt etc. the head gasket is not a routine service item………….no point fixing something that isn’t broken.
You would be better to spend the money on a low coolant alarm, the one I use and recommend is the Brown & Gammons low coolant alarm, but there are alternatives available.
These cars can run seriously low on coolant very quickly if they spring a leak, resulting in head gasket failure before you realise there is a problem.
A low coolant alarm is essential for our cars….. no ifs or buts and no cheapskating on not wanting to spend the money to buy one.
Fitting one is much cheaper than the alternative……which is a buggered engine……it’s not a matter of if, it’s a matter of when, which will be inevitable if a low coolant alarm is not fitted.
Consider yourself told!