1) IMO it is way too early in the year to even consider an EQD run for an amount so small. Who knows what might come up, or what else might be cancelled?

2) Rather than strain yourself looking for an out-and-back that fits your schedule, instead consider up-faring a current itinerary to a slightly higher coach fare bucket. This is usually an easy way to add $75-100 to a coach fare without wasting a day, especially if you aren't in need of the segments.