Well, a great position indeed. Thank you Diane.
I think that the main consideration here, as other fellow fibsters pointed out, is the 'building opportunities'. After making the 5-pt, our resources to build the 3-pt and close-out will be depleted as the checker on 10-pt is 7 point away from the 3-pt and thus, 'out of building range'; while if we opt to make the 3-pt first, this won't be the case as all of our men will be in building range.
About the 'strategical' importance of the 5-pt, I think we should not exaggerate significance of the so-called 'golden point' too much. Yes, it's good to make your 5-pt, but 'early' in the game and not during a blitz or pre-close-out period, as during these last stages having a 'prime' is of least value. During blitz/close-out, the most important thing to consider is to not allowing your opponent to make an anchor, especially in your 'deep' points. And if by any means, we're forced to let our opponent making an anchor, let him make an 'advanced' anchor as you'll have less hassle bearing-off your men against an advanced anchor than when facing a deep anchor. Correct me if I'm wrong.
Just my 2 cents...