Congratulations!!!
That's a lovely solution! Same breed but come in so many different colors/feather patterns, plus the fun of different-colored eggs! Most of my flock of 8 were started pullets about 18 weeks+/- when they arrived, all different breeds, and once they settled in and learned to see us as a non-threatening source of treats and fun things to play with, they became very sociable (and worked out their pecking order very quickly, so little drama thank goodness). No problem picking them up, petting, doing health inspections, etc. after they'd been with us for 2-3 weeks.
My 2 Easter Eggers raised from chicks are very bonded to each other, do everything together, and like hanging out & roosting at night with the Whiting's True Blue - my only other pullet who lays colored eggs (the rest lay brown). I wouldn't hesitate to add more Easter Eggers in future.
The one caution is, they & the WTB are lighter-weight birds and all 3 can/will fly right over the 7-foot fence! (We have hawk net over their yard vs. aerial predators, but it keeps these girls in their safe yard, too!) I've seen them take flight and bounce off the hawk net, landing back in their yard with a very startled expression.