The remaining shrimp have colored up really nicely since they arrived - I'm still not sure exactly how many I have left and might never know at this rate

I've not seen any shrimp carcasses so they're either all still there or Peach is eating them. I have seen him with a shrimp directly in front of him many times and he doesn't even seem to notice (confirming my suspicions he may be blind or very low-vision)
Giant val is doing well, already sending out runners and establishing a great root system. It came in with no roots and didn't want to stay down so I left it floating for several days and had a nice time watching the roots reaching down towards the substrate. It's now planted.
Echinodorus Rose plant is struggling - it came in a bit melty and out of the 3 plants, 2 of them have almost entirely melted away and have not developed any roots. I pulled off all of the dead/dying leaves/stems and will just hope for the best. One of them did develop some little tiny roots so I'm hoping at least one of them will make it. If not, maybe swords just aren't for this tank as everything else seems to do well.
Water lettuce is starting to get some nice root growth. I lost a good amount of those in shipping as well (damn New England August weather).
Dwarf sag and hygrophila corymbosa are doing better with most of the algae removed from the tank.
I can see some cyanobacteria developing in the gravel along the glass and still having some minor algae growth. The tank light has been on 12 hours a day so I'm definitely going to be shortening that to 8-9 hours. Still dosing with Flourish twice a week and performing 75% water changes once a week.
I have the two straggler Harlequin Rasboras left from my old school - I'm thinking of adding 12 celestial pearl danios but I'm not sure if that will look weird with the two random rasboras in there. Toying with the idea of rehoming them but hesitant to do so, paranoid they'd end up in a bad situation.
TLDR; all is well!