We're past due for a poetry recommendation. Leonard Schwartz's A Message Back and Other Furors will appease both your externalist side and your experimental side; the side of you that admires the structure of language and the side that wants to rebel against it. This is a book of poetry that you will read again and again--not because the text requires it to be understood, but because the text requires you to want to understand.

Thoughtful reading,
L.