I assume you are using one point for R's what will you be using your other point for?
I am not sure if I would go with smaller wider wheels or the rear sway bar. Some people might go for the LSD but I am not sure it would be worth the time/money to swap it out for the benefit you would get. The V710's are nice tires. I ran them on the miata for a few months last year before I switched to STS2.