I have been brewing extract w/ seeping grains for about 2 years now, all my brews have came out tasting good. I'm ready to step it up to alll-grain. I have been looking at recipes and have a few questions. They say to mash grains at 1.1 to 1.5 quarts of water per lbs of grain and then spare with 1/2 gallon per lbs of grain, in an example of using 11 lbs. of grain that would equal about 8.5 to 10 gallons of wort (depending on amount used during mash) in brew kettle. Is that correct for a 5 gallon batch? Will that much boil off? Is fly or batch sparging recommend for just starting out?