As a quick starter set I can see the appeal of it, though even one roll will probably have duplicates.
The answer will depend on what grade set you want. If you just want G/F circulated set and would be happy keeping duplicates as bullion its not a bad idea. I cant remember what they charge off hand for the roll but if its 15 16 a coin thats about what a lot of the
ebay ones go for. But if you want a higher grade set the duplicates will be to nice to be considered bullion and youll end up with extras where it would have been cheaper to just buy them individually.
Some people hate slabs but theyre readily accepted in the hobby. Even most people that hate slabs will concede that theyre good for key date coins to make sure what youre getting is authentic. Is it worth it to have every last coin you own slabbed, not really unless you get some real good deals.
I personally have all my more valuable coins slabbed and am pro slab. Aside from the authenticity and grading I like the protection they provide and the ability to handle and look at the coins without worrying about harming them.
Its really a personal preference but if you were going to buy a 1916 d
Mercury dime for instance I wouldnt buy one that wasnt graded. If you do go with the slabbed coins stick to PCGS NGC and ANACS and stay away from the basement slabbers. PCGS is considered the best and has the highest premiums followed by NGC followed by ANACS though ANACS does more Morgan varieties if you get into that. I would recommend slabs if you decide to do high end sets, its hard to give a blanket answer to that question that would applies to all series or even all the coins in a series.