Thank you both for your VERY informative responses. I should have added a few more details in terms of what I have to work with. The actual red carpet will be indoors at night in a gymnasium, so plenty of flourescents that we'll have to work with. And because this is a "small-scale" (low budget) event, we only have 2 Arri kits at our disposal. My initial thought was to have 2 650s up high at either end to light the talent and maybe 2 250s (all fresnels) down low to light the step and repeat because if the talent walks down the red carpet, they'll shadow the logos, right???
Again, thanks!