I like the inclusion of White Tulip. One of the best Debuff Girls indeed.
About the Speed Issue:
You could go with Snowdrop instead of Lavender
http://flowerknight.wikia.com/wiki/Snow_Drop
She is better in my opinion. Better Ability, new type and speedier.
Poor Man's Aconite:
Only "alternative" for Aconite is Swimsuit Epidendrum in my opinion. She also provides Skill Act. (way worse) and 20 % Debuff. No HP Absorb though which is a big deal.
http://flowerknight.wikia.com/wiki/E...rum_(Swimsuit)
Ah well i don't think i will chase after Aconite anymore.
It's just to much of a hassle to get you, Aconite :/
It was a nice dream while it lasted...