Totem Arro or Sttaf or Hawk??

All of them need big power except Forrest that has advantages of all three combined IMHO.
1. No need for large power
2. Stable load impedance
3. deeper bass
4. deeper soundstage

I can support what Paraneer and Czarivey have said,

My room is about the same size and I use Arro's with a Storm subwoofer. If you don't listen to bass heavy music (I listen to a lot of Metal), you could probably do without the Storm. Fortunately, I had the occasion to audition all three of those speakers side by side (during a demonstration by Totem's Vince Bruzzese no less) and I preferred the Arros.

I used a Simaudio Moon i-5 with the Arros and it was competent, but they really showed their best when I upped the amplification with my Magnum Dynalab MD-209.

I've had the Arros and Forests simultaneously in a prior system.

First and foremost both needed a significant amp grunt (high current and watts) to perform at their max.

However I strongly disagree with the comment that the Forests are easier to drive: quite the opposite in fact.

I had an all Arcam FMJ system that was a bi-amped kit to get the Forests to perform at their best. by contrast, The Arros were not bi amped by comparison, and I second the suggestion that a Simaudio I5 would be a nice match.

The arros performed very well in my small room with a jolida hybrid integrated. Surprising bass for a 4" speaker.
All the other Totem speakers I have had, I would agree about the power demands and have stated this in other forums. I ran my Mani 2's with a 200 watt Classe amp, but they really sounded the best when hooked up to the Mcintosh 1000 watt monoblocks. I was considering getting the Mcintosh 352 amp for a bump in power but after using the 1000 watt mono's, I would have had to go to the 500 or 600 series Mcintosh amps. Totem's are very nice speakers, but I ended up selling all my Totem's and going all Usher which are a little easier to drive plus they have the Diamond tweeter.

I would go arro with a small rel-0 sub. this sub is a 6.5" driver based sub that is sealed and lightening fast to keep up with the speaker. This sub with dreamcatchers (similar to arro but small cabinet) was amazing at bargain price. I drove this combo with a tube amp and others were amazed at how the speakers and sub completely disappeared. I had hawks and didnt like them as much.

For a little more than Hawks, Living Voice Auditoriums, their lowest on the ladder (didn't want to say totem pole), they are a whole new ball game but you need a good quality amp, not high powered as they are 94db efficient.