Thanks everyone for your input!!
Launch went off today with GREAT success. Sent up the Art Applewhite 13mm Cinco (1/2A-3T), Estes Quinstar(B6-0, B6-0), Estes Curvilinear(A10-3T x 2), Estes Baby Bertha(A8-3, B4-2), and Estes Shuttle Xpress(B4-2, B4-2).
Cinco was a perfect first flight- maybe 30-40 feet, enough to wow the kids safely and check the wind.
Quinstar was fantastic. On a B6-0 it goes high enough to be impressive but still low enough that it was "jog a few paces away to pick it ***.
Baby Bertha is a FUN little rocket. On the A motor it was a great flight (even though the chute didn't fully deploy) and on the B motor it went well (though it made me nervous with how close it got to the trees). I kinda wonder what would happen if I gave it some nose weight and stuck a D in it....
Curvilinear was also a solid performer. Great flights, except the last one where the NC was in too tight. Lawn dart but undamaged.
Kids had fun, I had fun, it was a good day.