I like your approach to things, Chicabee. Of course, at some point, you are going to have to take the plunge.
I try to be a Steady Freddy (or is it Even Steven
) in all things. And, to "get my ducks in a row" (to mix metaphors) before heading off down the road. As I've gotten older, I'm appreciating these traits a little more but it
does clamp down some on flights of fancy and creative performance.
Your, "RIR, a sex-link or red/brown EE, and a buff Leghorn" ideas strike me as a little more creative and a little less
steady. The Easter Egger will be a little smaller than the RIR or sex-link and the Leghorn will be a "light-weight" unless there's something I don't know about the buff. So, you'll have 3 sizes and 3 colorations (with the EE you can have all 3, individually). The Leghorn, also, may be the one who'll shoot straight over the neighbor's fence.
Having size and personality consistency and variable coloring may provide more balance. With some luck on their natural variability, having 3 differing EE's could put some "jewels" in your backyard. Some folks would find having a flock of White, Buff, and Black Orpingtons, boring. I would be tickled . . . uh,
pink. I'd probably feel the same with the color varieties of the Leghorns or Wyandottes (beautiful birds) but haven't really any experience with them. My favorite breed is the Australorp and it just galls me that there's no White color choice in this country.
IMO, a little flock of Buff Brahmas, Buff Orpingtons, and Buff Rocks would be charming, also. I've had each of these breeds but not all in the buffs and not together - what did I miss? They'd be a calm group for a backyard, personality-wise.
Steve