Depending on how concerned you are with this; lining the top of your rails with something like black felt tape can give your kitty a bit more grip as well as something easier to catch with their claws should they slip.

To get the best picture, you are gonna want darker screen material. According to ProjectorCentral (and factoring in calibration and Eco Mode), the projector may be too bright with a normal 1.1 gain screen. I would suggest Carl's Place grey screen (0.8 gain), these will give you much better blacks. One option is to DIY, here's a video. The other is their ProGray, you literally just staple it to the wall, all you need is to cut it to fit, you can go up to 135" and still have enough brightness from your projecotr, just cut it with like 5" of excess on each side, that way you dont need to staple right at the edge, and you can then use their blackout tape to create a 2" border (which helps control light spill as well).

Being "4K ready" is usually just a marketing term, but it can be used to say that the screen material is so smooth that the increase in pixelation can still be properly displayed. This would also apply to the Carl's Place screens.

Elite Screens and SilverTicket sell completed darker screens, but they are usually 0.95/1.0 gain, which will be fine (better than white, 1.1 gain), but the 0.8 gain of the Carl's Place will really make your picture shine.

+1 on the Sidebar for distance and throw calculations.

You can build your own screen, which is usually recommended because every room is different. It's also significantly cheaper. I strongly recommend Epson projectors mostly because of features, bulb life, and overall quality.

I bought the following components to build my screen (you can get smaller sizes, mine just happens to be ridiculously huge): http://www.amazon.com/gp/product/B007KA7BAA/ref=oh_aui_search_detailpage?ie=UTF8&psc=1[2] https://www.amazon.com/gp/product/B0052YQE7C/ref=oh_aui_search_detailpage?ie=UTF8&psc=1[3] https://www.amazon.com/gp/product/B00JF7IXXU/ref=oh_aui_search_detailpage?ie=UTF8&psc=1[4]

The build:http://imgur.com/a/HXtvB#Jimg8Mg

I gotcha. Have you checked out this stuff?

Looks really good and adds a little dimension to the border. It also absorbs the light, vs reflecting it like paint would.

https://www.amazon.com/Carls-Projector-Screen-Contrast-Boosting-60-Foot/dp/B00JF7IXXU?th=1&psc=1

This\^

Don't paint it please. Use velvet fabric to cover it or this: https://www.amazon.com/Carls-Projector-Screen-Contrast-Boosting-60-Foot/dp/B00JF7IXXU

I purchased a roll of this years ago when I made a screen at another address, I has some left over so I estimated $10. Looks like you can only buy it in 60 ft lengths! Sorry! https://www.amazon.com/Carls-Projector-Screen-Contrast-Boosting-60-Foot/dp/B00JF7IXXU

Since making the switch from flat screen to projector, I've suggested it to anyone in the market for a TV..

Just a few suggestions/tips with my experience so far...

Black Non-Reflective Felt tape (if projecting onto a wall):
(I project right onto my wall so this frames the projected image nicely....)

http://www.amazon.com/Carls-Projector-Screen-Contrast-Boosting-60-Foot/dp/B00JF7IXXU/ref=sr_1_1?ie=UTF8&qid=1464009450&sr=8-1&keywords=projector+tape


Spare Bulb:
Replaced i think once since I'e had it..and under $30!)

http://www.amazon.com/ViewSonic-RLC-061-Replacement-Lamp/dp/B0047T7JMC


Only known issues:

1. Projector would suddenly fade out (Fixed by replacing bulb)

2. Projector would suddenly fade out/overheat sometimes in summer when it was above 75 in my apartment (This drove me crazy for 2 months for such a simple fix!!....just go into Menu and turning on High Altitude Mode)

If you have any questions, feel free to pm me....enjoy!