Since you have AutoEZ you could use either the "Fan Dipole Splayed Elements.weq" model or the "Fan Dipole Parallel Elements.weq" model, both of which are included as of AutoEZ maintenance update 2.0.6. These models are described in section "Modeling Fan Dipoles and OCF Dipoles" here:
Just set the number of elements (variable "B") to 2 and go from there. You could change the existing source location from "Wire 2/50%" to "V1" and then add another transmission line (eg Wireman 554 or whatever) in addition to those which are already in the model, running from V1 to Wire 2/50%. You could even make the length of that new line "=A" (or some other unused variable name) and then easily experiment with different length lines.
If you don't have v. 2.0.6 or later just use the download link shown in your AutoEZ purchase confirmation email. Contact me directly if you need assistance.
Just a thought, not trying to assign work to you!