Not to derail the thread, but we got our kids the flexible LED lights for their bedrooms that stick on the wall - I finished painting one daughter's room this weekend and taking those lights off was a royal pain. Peeling them off was easy peasy, getting the residual adhesives off was not. I spent more time scrapping, using goo-gone and trying to clean that up then actually painting it seems.
Back to the PC, I can see some LEDs on the ram, but I'm probably going to go with the low profile ram that I listed above. I'm leaning heavily towards the D15S, given the tight confines of the motherboard
Here's my perspective, I did a little (very little) research and Rocket Lake brings PCIE 4.0 to the table. While I'm building a gaming rig, that will do other tasks like LightRoom and light PS work I'm not a hard core gamer that needs a 3090. Now with that said I'm more likely to buy a processor that is not only in stock but on sale. Rocket Lake will be priced at a premium and supply will most likely be constrained.
I've heard conflicting info on whether I should get extension cables for the TU150, I may spring for that if I want to try to enhance the color/theming of the inside. Right now its a minimalist black so I'm wondering if a splash of color on some power cables may be in order (I doubt it but I have time to look into it)