Is it possible to bi-amp the M80's?

The first option I'm interested in is the Outlaw 990(pre/pro) and Outlaw 7125(125w x 7ch). Setting up a 5.1 system, I could bi-amp the fronts to 250w with the rest at 125w. Assuming the components and speakers will do this, is that viable?

Option two, getting the Outlaw 990(pre/pro) with the Outlaw 755(200w x 5ch). That setup is pretty easy, but another $400 in costs.

Any other ideas on those options, or other ideas?

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