Hi, need to reroof the house after a recent storm (it's 18 y/o). House is 2000 square feet. I have, thus far, two quotes and I have no idea what I really need. One says install WinterGuard, RhinoRoof Synthetic underlayment, Swiftstart Starter, R&R exhaust caps, laminated shingles. The other is for GAF Camelot 2 lifetime designer shingles or GAF Timberline High Definition lifetime shingles. I have no idea what these things are. I'm an old gal, any help or suggestions will be greatly appreciated!