I did the slipcover for this (HUGE) sofa about 4 years ago. It was during the summer and we were having a heat wave. My house does NOT have air conditioning and I literally had a sweat shop and it was me doing the sweating.
It really doesn't look as big as it is. The sofa measures 120" across the back, which is really big. The chenille was quite heavy; so heavy, in fact, that I sewed the entire slipcover on my industrial machine. Usually, I only need to use it to sew the skirts on. Even using the largest needle on my regular Bernina wasn't enough.
The ironic thing is another client here in Coronado has the exact same sofa. Not the same fabric on the base, but the same frame. That one, though still huge, was much easier because the fabric was Shabby Chic duvet covers from Target. In other words, sheeting, which is a far lighter fabric. Looking at these pictures now, I have to say I am impressed. For one thing, it doesn't even look like a slipcover. For another, I think it looks pretty dang good!