Sam, we talked about cutting the pipes, a square, and straight edge would be a must.
As to cordless, the DeWalt impact driver is the cat's meow driving those lags.
I'm trying to go as "cordless" as I can now.
Got a cordless drill and impact driver set that I love.
I like my air tools too. I can drive my pickup with the air compressor on it and use the tools without electricity. It helps!