A couple of things.
1. Don't be surprised if, after a year or so of pruning, the "variegated-nes) of the foliage disappears. Many variegated trees tend to revert if not left alone.
2. Variegated varieties
tend to be weaker than their normal kin -- more susceptible to cold or other environmental factors. I do NOT know if this holds for juniper.
Both seem to be very nice trees with a lot of potential. If the first one were mine I would resist making any kind of a cascade out of it. The world doesn't need many more procumbens cascades.
If the second one were mine, I would pick a front that does NOT have the doughnut right in the center. It makes me want to take out my pistol for a bit of target practice.
And, as someone else mentioned, twin trunks traditionally follow parallel paths, not crossing loop-the-loop paths.
You could change the planting angle (we've only seen one side of each tree) to avoid the hole, or you could remove one of the trunks (which are identical in size and therefore a bit dullish), leaving a jin or not.
Whatever you decide, early spring is the time to start EITHER working on the tops or on the roots -- but not both.