In general, yes, this voting method will be the most appropriate (excluding the votes of the Newbie, Jr. Member, Member).
Maybe I missed something, but how can voters with the current interface vote for multiple candidates?
They can't. They will have to post their votes in a thread dedicated for this purpose. They have to anyway if we need to know who is voting in order to weight their vote by merit.
Also we're not talking about submitting sMerit, we're talking about counting the merit of each user who voted.
For example, LoyceV votes for position A 6975/10, and you and I vote for position B 2019 + 68/10 (thus, A is ahead of B by 488 points).
Yes, using merit works, but
you said sMerit earlier. Those are different things.