Overall the recipe is quite good: reasonable macros, good balance of minerals and omega fatty acids.
I noticed that the multivitamin is giving you more than necessary. Reducing the dose to 2 pills/day will ease the amount of manganese and of some vitamins, specially A, B6, and niacin.
It will leave you short on calcium (increase the calcium citrate), iodine (use some iodated salt or a specific ionide supplement), and iron. Fixing that last one is more tricky, iron supplements are going to have too much, but using them sparingly enough should work, albeit not optimally.
Lastly, leaving it “as is” is acceptable for short/mid-term* too, as body’s iron stores are quite plentiful relative to the daily loss, and iron deficiency is not particularly dangerous. The deficit would be quite small, too.
Your omega 3 is mostly EPA/DHA, and albeit this is good by itself, the ALA has other uses besides as a precursor of EPA/DHA. So, maybe its better to add a bit more ALA.
Adding some magnesium in powder form (like magnesium citrate) is a good idea, to replace the one from the multivitamin and to account for the increased need of magnesium from a high vitamin D dose. Its gentler on the gut, too.
Choline is lacking.
Regarding sulfur, there is no official RDI as food have plentiful sulfur. From Rob’s experience protein alone dont have enough, and he was using whey protein too, a bit more that your recipe has. Its not completely clear if he is refering to 2g of methylsulfonylmethane or of sulfur in his post.
The worst part is that niacin is way over the upper limit, and apart from changing the multivitamin there is no solution. Finding a good one can be very frustrating and hard, I know firsthand. The good news is that niacin overdose is not too harmful nor irreversible. After all, most multis overdose it routinely.
* I can relate to your situation, in the way that soylent can be a great improvement even with a sub-optimal recipe. Then one can use that improved condition (in particular the mental performance) to further iterate and improve the recipe. In my opinion your recipe is good enough for this approach.