What are the speaker placements for 7.1 HT setup?

These are mostly music speakers I might ad. Which is fine for some applications, but not a big space like you're using! May I suggest some more high end "active", higher efficiency focused designs better suited to your HT applicastions?
I've sold WATT Puppies and B&W's over the years, and have some experience with Dynaudio. There are simply better MORE EFFECTIVE choices for what you're doing IMO.
You might consider some "ACTIVE" speakers from a company called AVLAR located in Southern CAlifornia. They''re very high end sounding speakers, that are much more dynamic, focused and powerful sounding than the more passive speakers you're mentioning above. They dynamic realism and pressence will be much more cinema like, and yet still remain "audiophile" grade in refinement!...just a suggestion.
The traditional Stereo speakers you're looking at won't DELIVER THE GOODS for a high impact HT. I know this from 20 years and 6 high end audio stores worth of working experience...not to mention I do custom thaters myself, and am a consumate audiophile tweak myself.
Anyway, it's all good...it's just that some choices are much better and effective for your task.
Anyway, good luck-----------------------------------------

I'm going to burn my home theater set-up and move in kee tan. :)

I'm with Hbarrel...maybe we could just camp out in the yard or volunteer to run errands for kee tan....Interesting comments from Flrnlamb about speakers...Avlar? hmmmmm

Well I'd be interested to see where you end up putting your speakers, and with which speaker choices you end up with. If you use dirrect radiating speakers all around, localization and distaction from the rears is going to be hard to get away from! If it's not done correctly, you WILL BE continually distracted and "pulled out of the movie" from to much dirrectionality from the rears. This is a common problem with dirrect speakers in back/sides. It's like someone talking non-stop in your ear while you're watching a movie...very tiring, real quick! It's an artform indeed to find the place they sound best in the room, and or end up "EQ'ing" them, plus "making them dissapear properly for the effect.(I know lots of audiophiles think monitors in the rears is more "specific sounding", but this is not how movies were mixed back there, I'm sorry. (it can be done for compromise if careful however).
Another issue for you will be how your speakers sound during your "test spin" with them. I mean, they'll sound INFINITELY DIFFERENT when not placed properly, and with little or no acoustical considerations/treatment in place. Or has this all been done?
good luck

If you look in the back of your MX134 manual, it shows you how to do the the speaker placement.