Congrats @mtandy on your progress and thanks for sharing your experience with us. It looks like your nutritionist knows what she is talking about, it's great that you have access to that resource. Just a couple notes regarding fat and hunger, based on my own experiences and extensive (but amateur) research.
Those on a high-fat diet, either for weight loss or in an ongoing fashion, typically don't experience much hunger at all. This is one of the many magical aspects of high-fat diets that it seems the general public is unwilling to believe. A good place to learn more about this is watching some videos by Eric Westman from Duke University: https://www.youtube.com/results?search_sort=video_view_count&search_query=eric+westman
So a few things come to mind regarding what you have written:
You might consider supplementing your Soylent with fewer carbs and more fat, while maintaining the same number of calories. You may find that you feel less hungry. If you add real butter to your veg instead of the 0-calorie stuff, you might enjoy them more and end up eating less veg. Same if you eat the skin with your chicken.
I'm actually not sure what your goals are with the real food (you discussed this a bit above but I'm not sure how your thinking has progressed since a few weeks ago). Is it because you want diversity, or as a battle against hunger, or cost? If you want to optimize hunger and cost, you could just add fat to your Soylent. I use olive oil, others on the forum use canola or MCT. This will be quite affordable and you will probably be more more satisfied and have better blood metric results. I find that the taste is still just fine. I add just a little cinnamon and vanilla.
You said that you are on soylent 1.4. As a high-fat enthusiast I love 1.4. Sadly, 1.5 has significantly less fat and more carbs. You might find that your insulin and glucose levels are affected by this, and that you feel more hungry.
Maybe you've already considered this stuff, but just some thoughts I had. Congrats again on your progress!