About the pictures: the key is to compress them a bit, that is, set jpg quality to medium of your tool supports it (and something between 800 and 1200 pixels on the long edge works best for those viewing the attachments). We are due for an upgrade of the forum software, so let's see whether those constraints remain (but getting there may take a bit).
Your pictures do not show whether there are turning blocks at the stern of the boat. If not, then yours isn't set up for spinnakers (the only blocks you show there is the one for the traveler/main-sheet bridle), all the spots where spinnaker blocks would be are out of frame/covered. With blocks in the back, the system could have been one of sheeting to the back, then running the sheet forward to the blocks you show, then cleating them on the side deck - that would seem to be a nice way to keep the spinnaker sheets out of the cockpit. Our sailing conditions rarely call for cleating either sheet or guy, so I just run them directly into the cockpit from the blocks in the stern - placed forward of the stern docking cleats. That's not 100% ideal as they tend to get sat on or trapped between someone's back and the coamings. So, seeing your post, I could imagine using them as described to good advantage.
On a DS it would be untypical for people to rig double spinnaker sheets/guys, so if you wanted to use those blocks for a guy, it would have to be a snatch block. I believe some people do use a fixed-eye fairlead with a side opening (so it's more like a hook than an eye) and hook the guy there to get a better angle. As you race a Soling you'll know all about rigging spinnakers, of course.
You'd probably want to put tracks on the inside of your coamings for the jib sheets and to rig barber inhauls for better sheeting angle.
A recent post from the person who put #8011 on the market had pictures that show a typical setup for the controls on the cuddy top:

- Day Sailer #8011 CB jib blocks
- CB system and jib blocks.jpg (143.23 KiB) Viewed 18422 times

- Day Sailer #8011 cuddy top layout
- Cuddy top labeled.jpg (182.04 KiB) Viewed 18422 times
Here's a picture of my jib tracks and upgrade to ratchet block as well as my rather jury-rigged spinnaker blocks (the setup was intended to be temporary to try out a "free" second-hand spinnaker, but worked so well, I haven't felt the need to rig anything more permanent).


(Click to enlarge, slightly)