Head gasket replacement

I am so tired this day for i kept on working on the vans engine. I need to change the vans cylinder head gasket because the oil already combines with water due to worn head gasket. The cost of the head gasket is 1080 pesos and the valve seals at 65 each. I already dismantled the engine component now and I will be working tomorrow in the cylinder head itself. i just hope that i can finished it soon so that I could used it by next week.