Cracked fuel cap gasket, fuel tank vent hose minor damage, leaking valve cover gasket, is it safe to drive

Check engine light came on. Took vehicle to Toyota. They said slight damage to the fuel tank vent hose. Don't see any cracks but recommend replacing vent hose due to age and mileage. Also found small crack on fuel cap gasket. Recommend replacement too. Also, said there was an engine oil leak caused by valve cover gasket leaking and should replace. Repair estimate given $ 2,200.00
more than the blue book value. Declined repairs. Is vehicle safe to continue to drive? Engine check engine light remains on.

Thank you for your help.