Peter - if you have a 2 post, you can put the engine and trans in all in one shot with it sitting on the sub-frame. I just took mine out today that way.
I supported the front of the engine, rear of the trans, and then have each side of the sub-frame supported. (I had left the wheels on it, but they don't really help support it at all once the shocks are out.) 4 jack stands should do the trick. Put the trans brace on too.
I think if you have the engine and trans with the sub-frame on a furniture dolly, you could move the whole unit around to get it better lined up, probably need less jack stands then too. (Coming out that didn't matter much.) Once the body is lowered, it's 6 bolts. Much easier than going in the top.