I've attached a drawing of a proposed new drain, sorry for the poor quality. I'm thinking this may be one option to solve the problem. The drawing corresponds to the existing setup (see previous photo posted).
My other thought is, would it be acceptable to create the same drain as proposed in the drawing, but instead of adding a new dedicated drain line running into the sump pump/sewer ejection pit I could simply T into the vent stack for the pit? I realize this is a "no-no" generally speaking, but wasn't sure if given the small discharge of condensate lines if this would be acceptable still. Otherwise, I could just do the dedicated drain line as illustrated in the drawing.
Curious if anyone else has any recommendations.