You have several options here. You could put the $23 into an open epic, use it to open a new epic, sponsor shorter poetry, or some combination.
There is one open epic. "Pitfalls" belongs to the series P.I.E. and needs $30 to fund fully.
There is one $15 poem left, "Mad Scientesses." There are three $20 poems left: "The Alpha Blight," "The Mad Engineer," and "The Science of Madness." You could buy any one of those, with the remainder going into "Pitfalls."
There are three epics left: "Facing Justice" ($36), "The Age of Reasons" ($37.50), and "Good Minions Are Hard to Find" ($47.50). $23 would make a good start on any of those.
First distribute the funds, then specify your choice for individual poems.
How would you like to distribute the $23?
If a $20 poem is to be sponsored, which do you want it to be?
If a new epic gets opened, which do you want most?