Bookshelf Speakers; Ported vs. Acoustic Suspension

USing the sub will definitely help address any concerns regarding low end extension.

Putting any speaker on a shelf close to the wall will pretty much always limit imaging and soundstage, if those are things you care about. Not much can be done about that.

In your situation, I went with sealed-cab speakers. They typically have a more gradual roll-off in the bass and hence are easier to integrate with a sub. I was worried about a "bass hump" because of close proximity to the front wall, but my bass is remarkable full, smooth, and well-integrated with a small sub. Very pleased. If you do go with ported speakers, you'd be better off with front ports, IMO, so they have room to breathe.

Inputs are greatly appreciated. Each speaker will be within 1" of the adjacent cabinet and TV. They will not be pushed back in the cabinet (i.e. front of speaker will be even with front of cabinet shelf). It would appear that sealed designs would be less risky but I really like the Silverline's.

Will need to give this some additional thought.

For the same size cabinet, Bass reflex has output to a lower frequency but its frequency response is less linear. In other words, bass reflex has a peak near its roll-off frequency and a dip above that. So, if you are going to have a suboofer, you will have an easier time combining with an acoustic suspension speaker, for flatter bass response. But, actually, mids and highs are so much more important to get right, that really the choice of speaker should really more depend on how its sounds to you, overall, with your room, your taste, and your equipment, so I don't think anyone can really advise you without your own personal audition and comparison. Taking anyone's advise about type, technology, brand, or even model make it a total gamble for your ultimate satisfaction.

Adding a sub changes things. On the one hand, sealed box satellites might do some things better, but most subs don't work very well when asked to go much beyond the bottom octave, so ported satellites might work better in that regard. I suggest you consider and try both, and decide what you like best, regardless of whether or not the satellites are sealed or ported. Besides, there aren't that many that are designed to work so close to a wall to begin with.