Nice tree. I was going to say that Ponderosa stay flexible for quite a long time, there was no reason to hurry. Sometimes a branch has a shari in it, a section of dead wood from a branch dieing back, these segments don't bend well, you need to be cautious where you put the bends. On the other hand, even old wood can be bent fairly sharply, if wrapped. I am assuming the angle of the photo that it is looking at the tree from the "front'. I would definitely bring this one to the workshop when Todd comes down, I think the bend can be tweaked, I'd like to see the apex come forward a little, it looks flat, two dimensional, in the photo, but it is only a photo, show it to Todd, see what he thinks. You want the bend to move in all 3 dimensions.
About needle length.
I have seen a ponderosa with needles a little less than 4 inches long. I was a tree owned (still owned) by a Milwaukee member, she bought an old but small ponderosa some 20 years ago. Her branches all have 4 and 5 levels of ramification. Most Ponderosa when collected only have 2 or 3 levels of ramification. Her tree almost looks like a JBP until you look at the bark and the trunk. She does not withhold water, she only fertilizes after needles are hardened off. She does do bud selection, removing primary buds to force the secondary to grow, but she is very judicious, bud removal only in the strong sections and not every year. She does claim to follow Larry Jackal's book closely. I did not get a photo, but will do so the next time she brings it to a meeting. Ramification will bring needle size down, but ramification with Ponderosa is not quick, she said it was over 15 years before she had significant reduction.
The longest in my care Ponderosa has been with me less than 7 years, my needles are still over 6 inches in length, so I can't say first hand exactly what it takes to get reduction to 4 inches. Mine was a burlap special from Andy Smith, and it took 3 years just to get it established and growing. I did not get bushy fox tails of new growth until the 4th summer.