It's really tough to say whether the notes would be worth more together or apart. And by "worth more", I mean how much they would sell for at any point in time. Buyers can be so fickle. The 1971 series $10 notes have a numismatic value (according to catalogue) well in excess of face value, and paradoxically, that could be an impediment to getting a good price for these notes. Internet auction buyers seem to be interested more in low-value consecutive notes and will bid up these types of items while ignoring "good" prices on more valuable material.
I just checked the catalogue, and Crow-Bouey in Unc is $30. Radar notes of this series are $45 in Unc, so not a substantial premium. I think keeping them together might be the better choice because buyers trust a grade of Unc more if they see consecutive notes together. Splitting the radar from the group might make it hard to convince fickle radar collectors that the note is Unc.
