Finally got the EEP working, and I'm tweaking the ol' sattelite pack so I can use those sweet glowing ion parts in addition to the ion units included in the DSP, as well as adding values for the Soyuz panels and some NovaPunch stuff.
I must be a complete idiot, because despite having powertech, electrical energy, and kerthane/satellite installed and the powertech-elec compatibility plugin, the larger ion engine refuses to take the energy from the solar panels or provide thrust.
Hopefully, the surface snapping on the SU adapter can be either tweaked or fixed on the top surface, as currently nothing seems to predictably snap or attach to it. Parts seem to be trying to attach themselves to the bottom, which forces me to carefully shift-rotate when this are close to where i want them. Is this a limitation of KSP or something related to the part itself?