Yes, those will have everything the FSM has.. but what would be easier, proping up a notebook on the fender, or a 10lb book? And if you don't have a notebook, imagine proping up a full size desktop on the fender. Trust me, an FSM is much easier to handle than a CD. You can buy it, but I would suggest an FSM, just because they are easier to handle.
Just a side note [since I never read this post before], Haynes and Chiltons are only good for mechanical stuff. My Haynes has saved me, my front Cylinder Head was held on by one thing, and I couldn't figure out what, and my FSM said nothing of it. Pulled out my Haynes, turned out it was a Compressor Bracket, with a T-50 bolt. It'* good to have both, IMO. My Hayes is worthless for electrical. I wouldn't even bother touching it for electrical stuff.
'89 SSE - GX3 -190k, 155k on body - Back for another ride.