Leftover Magic - a new work in progress

My newest WIP is tentatively called Leftover Magic, and I'm very excited about it. It is a middle grade novel with a mystery element and something which might be termed magical realism and might be termed light fantasy. The main character is Chester, a boy with a journal that he thinks might hold clues to a treasure, possibly even a magical treasure. He is befriended by Olive, tormented by his great aunt, and confused by almost everybody else who might also be looking for the treasure.

While the novel is in prose, the journal and some other things have poems that provide Chester clues in his search, or guidance about how to proceed. Some of these are fairly simple and direct, such as this cinquain (2/4/6/8/2 syllables):

Beware!
Today brings you
A friend, and enemy,
But which is which may not be clear
LOOK OUT!

The more challenging ones are less clear to Chester. The following is one I wrote for a particular purpose, but it is probably too much for middle grade readers, so I'll save it here in case it doesn't make the cut or gets drastically simplified or something. It is a Petrarchan (or Italian) Sonnet, so iambic pentameter with a rhyming pattern of abba abba cdecde. (Yes, I am a poetry geek.)

Goldfinch in winter, having lost most of its yellow

The finch may seem so golden in the spring
as through the dew-dropped underbrush he flits.
A flash of yellow, then perchance he sits
surveys the yard as in his realm, the king.

But when the leaves begin their coloring
and in your evening walks, the cold chill hits
Then watch for him as early dusk permits
a tawny white with barely yellow tinge.

If knew you not the myst'ry of his kind
You'd think a diff'rent heart within him beat.
If you had learned his happy song to trust,
you might no longer, to his faith be blind.
Your doubts might grow, and think it was deceit
to think of him as friend, but sure you must.