Anyone have tips on scalability and HA/LB for trellis?

I’d like to migrate a client to trellis and supposedly he has 200k+ daily pageviews. He currently uses ELB and other Amazon services, I’ve used trellis for various projects and I love it. I’m wondering if it’s a good solution to replace his system with and if it’s possible to just tune some parameters and have a better setup than their current complex system. (not very complex, just relatively when you compare to a simple trellis install)