AMP/Speaker help please...

Looking for some advice please....
To start, I confess I am not a pro audiophile.
Hopefully someone will be kind enough to help me answer some questions.

I am in-process of upgrading from some Rotel gear to some higher end (used) audio equipment.
I have a BALANCED AUDIO TECHNOLOGY BAT VK-500 w/ Bat Pak (amplifier was recently purchased, dual mono block 250 WPC @ 8 Ohms) and I am considering using this amp to drive some Kappa 9's (that are in excellent shape).

1. I am using my Rotel RC-1070 solid state pre amp.
2. Will this BAT VK500 amp adequately drive the Kappas 9's as solo amp? Everything I read about the Kappas is their amp killing potential. Many Kappa 9 owners are also bi amping these speakers to get them the power they need to play well.
3. I have an additional Rotel 2 channel @ 200 WPC amplifier available at this time. Can I bi amp using my Bat vk500 amp on the low end and my Rotel 2 channel 200 WPC nfor the high end? OR must I stay with same manufactuer amp's to bi amp these speakers?

Any input greatly appreciated!