The Immage series stuff sounds ok, and might be alright for straight HT applications. However, assuming you have an 8ft ceiling, I would suggest a more "focused" type speaker that will lessen coloration from room reflections, something with controled disperssion, such as Diappolito designed configured speakers(or similar, like the SUPERIOR PSB Stratus Silvers...much better/higher end sounding speaker, and better for movies or rock!), horm loaded speaekrs or Stuff like Def Tech's "powered" tower speakers would be better, and much much much more dynamic sounding!
Although, especially with the 5T PSB's, YOU SOULD DEFINITELY BE CROSSING EM OVER AT 80HZ OR SO FOR YOUR MOVIE AND ROCK MUSIC APPLICATIONS!! Yes, they'll play full range, and have OK dynamics. HOwever they still won't sound as dynamic as if you let a dedicated "powered" active subwoofer with larger driver handle the bass!! You can of course try it both way's, but you will find out that you can clip and distort those speakers easity, as with most speakers like that. The reason a lot of audiophile "dainty" speakers out there sound aweful for rock is thay have really bad dynamic capability on the whole! Standard passive speakers like the IMage 5T's are no exception, and will really benefit from active woofer application!...So I recommend keeping the same crossover, playing as as "small" or thereabouts, and using the woofer. Besides, with most hard dynamics rock, percussion, techno, rap, R&B, etc, you won't be trying to pull out that last "enth" of clairity and tranparancy, so using a digital crossover won't hurt you. On the other hand, if try to do "bypass", and run the immages 5t's full range, you're going to run into the limits of the speaker quick! I can't tell you how many drivers I've blown running full range speakers, even with high high current amps! Also, the dynamics is NEVER as strong as it is when you PROPERLY set up a good sub/sat/mains crossover set up! Take advantage of that ACTIVE POWERED subwoofer!..
...Another choice, would be either something like M&K's superior little satalites with a woofer combination, used for both your movies and rock music, or any music really! For about $250 ea retail, you can buy the M&K K7's(EXCELLENT!), and a great subwoofer, and get tremendously dynamic, focused, coherent, dialog intelligable, speaker set up, that will continue to amaze you, no matter what you play through it!
I have yet to hear better for the money than say 3 M&K K7 satalites(4 ohm), with something like an M&K MX series sub, Earthquake sub, or Sunfire in a smallish/medium room with good electronics!!!!....VERY VERY good infact!
Also, doing some of Def Tech's powered BP2006's with a sub would be a great choice(but would still cross over as "small"), using an active woofer on both mains, and adding a sub! You could even get away with no sub, and use the bigger PB2002tl's with powered 500w 12" subs!
However, you might have to be careful with cabling, so you don't get too bright a sound...the Outlaw should not make for a bright match with the slightly Analytical/cool sounding Def Tech's. Areas the Powered Def TEch's will excell will be dyanamics, clarity, non-coloration, and soundstage.
However, really, for the money, I garantee you'll not do better than say 3 M&K K7's, 2 M&K dipoles/tripoles, and a great powered subwoofer or two!!! You'll save money over the PSB5t's by a ton!!!!...and still have better movies and music in my oppinion!
I also am into the Ultra high end 2 channel systems, and have been using the likes of Thiel 2.3's and Sonus Faber Electa Amators with Threshold class A rated amp and Pass labs/Audio Research preamp..so I like high end sound myself.
However, for the money, for rock, heavy dynamic music and DD/DTS soundtracks, you can't get better for the $!!!....might want to check it out. (mksound.com)
However, all that asside, as with the Immage 5t's, your performance overall will depend greatly on how well you can set up all the speaker for great sound in that small room!