I have to replace a 10-year-old 75 gallon WH that's leaking and would like some "expert advice" on two things:

1. If I have relatively easy access to the heater, could installation be a DIY job for one person? I've replaced a 40 gallon WH before by myself but I have no idea how much a 75 gallon WH weighs!

2. Is the Sears unit I've picked out a top choice for a replacement: http://www.sears.com/shc/s/p_10153_1...3176000P?mv=rr? It's got two magnesium anodes, 81 gph recovery at 90 degree rise, a 12 year limited warranty on parts and tank and is selling for $850. I'm going to be in the house for a long time and want a reliable unit. But it doesn't get a lot of use, since my wife and I are empty-nesters with occasional guests. It's sized mostly to enable my wife to take a bath in her large soaking tub.

Thanks for any advice you can give me!