I have an original 30 year old roof on a house I built in 1972. No leaks but the shingles look bad as expected. I live in OHIO. To re roof, Somebody wants to put these on my roof: ELK Prestique 30 Shingles with #15 Felt paper, Aluminum Drip edge, Omni Ridge Vent, Vent boots, Step Flashing, Chimney Flashing & Ice Guard valley. Wood replacement is an additional charge of $40/sheet of plywood.
Is this good or bad? What should I watch for.