Room Dimensions and Klipsch RP-260-F vs Chane ARX5 - Expert Advice

Hiya Guys!!
I recently posted on another site which shall remain anonymous hehe but after reading Sonnie's thread on the speaker evaluations I knew I had to ask and get some real expert advice from this awesome community.

I moved to a new apartment in NYC (so this limits things quite a bit as I can't just knock down drywall, apply insulation, or annoy the neighbors among other things hehe). However, here is what I'm working with and where speakers would go:

(Quick AutoCAD/Sketchup design with exact dimensions/measurements of the room)
- https://imgur.com/a/8XL6R#0

Due to money constraints (college student here) I'm starting with a 3.0 system and maybe adding a wireless sub-woofer in the future. However, I'm still a bit undecided on which L/R and Center speakers to go with and could truly use your expert advice. I was originally looking at the Klipsch KF-28's as they going for $250 each but after reading a few posts on Reddit about the Reference II speakers being much better I contacted Eric at SoundDistributors to see if he had any in stock but sadly it seems only the premiere series are available (which are way above my budget) but his offer has me thinking.

Based on my room dimensions/measurements I could maybe go one size down from the RP-280-F and see if I could save some money by getting the Klipsch RP-260-F which should be adequate and let me still blast my music or watch Interstellar and hear Hans Zimmer fall sleep on the organ while my solar plexus vibrates lol.

As you can tell I'm a total newb to this but trying to learn as much as possible and trying to prevent making a purchase I would regret as I don't have the budget to do so nor want to replace all of it in 5 years.

Based on this setup, is there anything you would recommend or advice? I know the L/R speakers are close to the wall but truly have no choice as it would block the way (if the bass is accentuated too much by being close to the wall, is it possible I could place an acoustic panel right behind the L/R speakers to fix or improve that?). Should I not purchase one of these or any of these? If so what should I buy instead and why? Someone recommended the Chane ARX 5 speakers over the Klipsch RP-260-F. I noticed they are highly rated and well reviewed on Sonnie's lengthy and well setup speaker showdown/battle however, in this review they compared them to the Klipsch RF-62 which are from the cheaper Reference II series and not the premier series. Do you guys think if I could find a good discount on the Klipsch RP-260-F that they would be a better choice over the Chane ARX 5 speakers?

Lastly, I'm having a hard time figuring out which A/V receiver to purchase. All I know is that I need it to have WiFi and Bluetooth built in as I don't want to buy adapters and I will be using Spotify to stream music. What do you guys think of the Onkyo TX-NR626? I was recently told to look into the Denon AVR-X1100W (refurbished cause new is $499).

Lastly, what's your opinion on the 60" Samsung 7150 (I was debating between 4K and 1080p but I've heard there's a lack of 4K content and the 7150 has a higher refresh rate than similarly priced 4K TV's). I'm pretty set on this one as I can get it under $999 and seems to be a popular choice so far. I was recently told to look into the 60" LG Plasma's which are cheaper and highly rated but I'm not sure as my living room will be brightly lit most of the time with the movie nights every once a while.

Note: I'm already looking into at ways to prevent echo/reflections/distortions by buying some wall panels from Acoustic Mac (or might make my own with some Roxul). However, I'm unsure at to their placement (I know the sides tend to be the most important but ZeosPantera from Reddit pointed out that the walls are so far apart it might not be worth it) how about behind or next to the speakers?

Thanks for reading. Any help, advice, or suggestions are truly appreciate it.