Great premise! I hope you are not abandoning this!
Now, I apologize for bringing up this again, and possibly annoy + anger you....But I must insist:
The name "Victor" just does not cut it! You cited your reasons as "conflicting interests", sure, that would certainly be plausible if the name were Francis, or Ernest, or Leopold (his maternal male relatives), or even Otto, as some sort of distant Welf acknowledgement.
However, honouring the mother with the first name just defies common practice! Never mind Napoleon Eugene, he's still "Napoleon". If it was Edward Victor Alexander, sure, perfectly plausible, but honestly, unless for some reason a certain "Victor" was overwhelmingly important to both sides of the family, or, his birthday happens to fall upon some obscure "St. Victor's feast day", I see no reason why the name Victor would be used (other than your personal preference)
Okay, if any of the above comments have offended you in any sort of way, I'm sorry, I don't want to be patronizing or insulting or anything, I just want to provide a possibly good and passionate argument to the name issue, because as far as I'm concerned, names are extremely important among nobility, so it's a stickler for me, I'm sure you don't want to see a King Newton or King Mitch of Great Britain would you?
I haven't abandoned it, I'm just stuck is all.