These 2 options are good deals and what you should consider.
I like option 1 the best, because you get a nice light fixture, a good depth of sand, and a reasonable amount of live rock. The Protein Skimmer leaves a lot to be desired, but will satisfy the tank until you can upgrade, which you will want to do. This is an amazing price, and I hope you still have time to get this setup.
Option 2 is also nice, but not even close to the deal you are getting on #1. The Coralife SuperSkimmer 65 is a decent skimmer, better than the SeaClone, but probably better suited for aquariums 38 gallons and smaller. On a 55 you are at the very limit of what this skimmer can do. The T5 light fixture is nice. The problems with this setup are the lack of live rock, which is a huge expense, and the need for more sand, which will also cost you some cash. This is a nice deal primarily because of the T5 fixture being included.
I think you should buy both setup. Move the Corallife Super Skimmer 65 to the 45 bowfront, along with the few pieces of live rock the guy is throwing in. In the short term you can use the 55 as your quarantine tank
and in the long term as a grow out tank for your propagated corals. 8)