I think that most receivers use the 8 Ohm setting for both 6 and 8 ohm speakers. So a mix of 8 and 6 ohm should be set to 8. My Vp150 is actually marked 6 Ohm.
As for the Outlaw 1050...it has gotten good reviews but is starting to need a little updating. Such as Prologic 2(great for music, old VHS tapes and Satellite TV viewing). IT also lacks 5 channel stereo. It is very sturdy though and apparently sounds great.
As for speakers, Myself, I sould go with M50 or M60 fronts with M2 or M3 rears.
Other than that, I'd say go for it.