Second part: Your fingerprint
wut?
The second part of the passphrase will be... Your fingerprint?
Ignoring how complicated all your idea is...
What is a phrase fingerprint? xD
that is not such a good idea.
the fingerprint system is not perfect yet and it has some problems, and reaching a truely random password with it will be hard (from what i have understood from what i have read).
also consider what if you burnt your fingers? what will you do them? all your money will be lost because you simply lost something that you could never "back-up"
i am not exactly referring to a horrible incident that you lose your finger for example although that is still possible and leads to total loss.
but even small burn like burning it with a hot stove or something leads to you have no access to your money at least until your finger is healed! and that should be a concern because you wouldn't have any other way of accessing your funds then.