The easy answer is to sell the Superscoutmaster and buy the Classic 3 if that is your direction.
Why? Well, if you ever go to sell the Superscoutmaster after all of the upgrades that you do, price will be hard to determine and buyers will not necessarily be looking for something that is neither fish nor fowl. You will also end up selling the tonearm seperately and the platter as well when you do the upgrades. To me it would be more trouble than it's worth. YMMV
Why? Well, if you ever go to sell the Superscoutmaster after all of the upgrades that you do, price will be hard to determine and buyers will not necessarily be looking for something that is neither fish nor fowl. You will also end up selling the tonearm seperately and the platter as well when you do the upgrades. To me it would be more trouble than it's worth. YMMV

