I'm a Sasuke fan. I believe there is such a thing as necessary evils, things that under normal circumstances would be looked down on and punishable, or horrid, but under certain circumstances need to be done. Prime example, murder. Normally an evil, but in cases like a thief holding someone hostage, killing that person is a necessary evil.
A grander scale, going to war with the Nazis. We were full-blown attempting to kill them, we did kill many, and we got Hitler killed. Plain and simple, it was murder. But it was needed.
For Sasuke's plan, the same logic applies. Killing Naruto, the Kages, the Bijuu, it's murder which is normally deplorable, but depending on the results it may bring, may not be a bad thing in this case. Sasuke's plan will possibly go in one of four ways if he succeeds in killing who he wants to kill:
1. He presents his ideals for revolution, and the people accept despite him killing them, based on Sasuke's reasoning, and his revolution succeeds in bring peace
2. He presents his ideals and people refuse, meaning his revolution never happens
3. Scenario 1, except his revolution fails at bringing peace
4. He attempts to force his ideals on them
I acknowledge that all four of these are possible. Plain and simple, we don't know what Sasuke's revolution entails. Diplomacy, democracy, dictatorship, we can't say, so we can't say yet whether or not his plan on the right or wrong path. Anyone who says his plan is right and will succeed is just as wrong as anyone who says his plan is wrong and will fail at this point.
Sasuke isn't an eloquent speaker, his cold and secluded style of living has led to him having poor communication skills. While a normal person may say "You're not strong enough to fight them, hang back or you'll be killed", Sasuke may say "You're far too weak for this. The only use you have in this situation is being killed, so don't bother coming with us." It's the same meaning, just badly worded on Sasuke's part, so we should take into account that when Sasuke explains his plan, the meaning may make sense and could be positive, but his abrasive wording may make it seem like just another evil plan.