#2 and #3 are actually liabilities this year for WSU and #5 is unknowable at this point (although all evidence suggests that throwing teams like WSU do not win the TOP battle). As to #1, Tuel is solid, but not spectacular. He also does not have 2 full years under his belt (as you know).
#4, speed, is probably the only thing that is true in your post. But you overestimate the difference in speed between the teams and the advantage (if any) it may provide.
Biggest reasons WSU loses by at least 2 touchdowns (just as Vegas predicts): porous defense, young players, new system, no running game.
But please come back Friday morning to discuss.