Those leaves don't look compound to me.
Alternate leaves, but with one at the tip = tip off that it is a compound leaf.
One can easily verify this by looking for axillary buds - there is an axillary bud at the base of the petiole of a true leaf.
Probably not suitable for bonsai I take it then?
Probably not, but you can have some fun nonetheless.
Wysteria, for example, has compound leaves. One can cut away all but a leaflet pair and a new shoot will emerge in a few weeks time. Sometimes this will make them bloom a second time in the same season.
Zanthoxylum piperitum (Japanese pepper tree) also has compound leaves that can be treated simply as 'select-a-size' leaves and used to tune growth strength in one part of the tree versus the others --> not really any different that cutting maple leaves in half that is commonly done to get light to the interior of the tree.
I've been messing with little mountain ash (rowan / sorbus americana) in small pots, Kept small the compound leaves tend to stay small(er) and they seem to work as 'select-a-size' leaves, but they nontheless tend to just look like miniature palm trees. I'm not bored with them yet.
I potted a few walnut trees that sprouted in my yard (thanks to the neighborhood squirrels!). The most interesting thing about them was that one can make a sub-inch tall tree, but the leaves don't scale --> kinda funny to have a tree smaller than one leaflet of its compound leaf
Brazilian rain tree (BRT) is a very popular bonsai subject that I haven't played with, but it too has compound leaves.
And, if you get into compound leaves, there are even maples with compound leaves.
IOW it could become a specialty and you could become famous. But probably not. The point, though, is to have fun wasting time in whatever ways you choose to waste it!