LOW TECH Down and dirty (very dirty) This is how I did it.
The engine and trans were suprising very well balance when chained this way. . Removed the Carb , note the thick pad against the tail panel , it was needed maybe 3 -4 inch of clearance . I used a foldable picker just like the Harbor Freight model you Linked to (don't remember where I bought mine, have gone through a couple different models and capacities over the years - motors keep getting lighter. ) Will protect the trans from the chain contact area going back in.
No I won't be using the roof as a work bench for the install after it comes back from paint. LOL ( That drove my son crazy. ) 
