What do you mean, 'restore the bike as it was'?  As far as I know the only 'original' S types were 69-70 types.  Anything else with S pipes is made up, at least in my book, not that I don't like them.  But as you say they are a pain in the butt to adjust, you'll probably find the heat shields crack and fall off in about 4-5K miles.  You'll be lucky to get 10K on the dog leg bracket.  Keep an eye on things getting loose, and don't let it rattle against the primary case.  I re-tapped my silencers with 10/32 so I could buy the little SS button head Allen head screws at a reasonable price, and when they disappear it's easier too, I keep them in stock.
Make sure you use good clamps, I use 'Moose' brand, there are others available.  I didn't find the 'omega' type acceptable.
Looks good.
Dave
69S