Hmph. I am not much help, because I LOVE Ronan, Abram, August, and Augustus!
With DS2, we tossed around Ewan/Ian Augustus and Augustus Ewan/Ian near the end. Ultimately we went with Ian Augustus. I think I prefer Augustus as a middle name.
Personally, I would cut Colton. But I hate the name! Reminds me of a horse.
2. Abram (close second)