They are beautiful palms and it looks like you have a really healthy seedling! Make sure to keep the humidity up and it should do well. Good luck with all your new plants, hope you liked Hawaii!
-Alex

Lucky you, hope they thrive!

That looks like the variety hookeri. I've got a couple of those, small but still a fair bit larger than yours. Mine are in a shady spot where they'll grow up into more light as they get bigger but have filtered sun. The ordinary Chambeyronia macrocarpa can take more sun than these. Otherwise they're quite an easy palm to grow. I'm expecting the new fronds on mine to start 'flaming up' soon.

Do you know when I can expect the red fronds to show?

They can be a bit variable but I'd expect them to do it by about the 5th/6th frond or soon after. Some people have complained they haven't had the colour after quite a while but they probably had the ordinary C. macrocarpa.

There's quite a few palms that get that red, or bronze, new frond. It always creates a bit of interest and looks attractive in a garden.