Robinson Crusoe's Scarecrow

[Brownlie]

This could read more quickly and keep your readers engaged despite the length. I think switching into simple past tense would really strengthen this.
For example the first four lines:

Deliverance had come in due degrees,
providence furnished me with corn,
but savages spied my growing ears,
and waited 'til I was gone.

I think you should also comb through and cut out excess, for example

"and especially I had in mind those people
who inhabited therein, and were at present
very much in need of some subsistence."

You flat out repeat "had in mind" from the line above, and these lines, while following the style, are all saying one thing in a very roundabout way.

This is truly a narrative, and a fun one at that. But with as much as you have going on, I think it's important to trim up a bit to make sure the reader isn't bogged down. A 'forest for the trees' kind of thing. :')

Really good comments jkprry, I owe you a read, if somethings to be said for propriety.