Yup, I did some more digging, and it seems that without modding, it wouldn't be a good fit for the TR100. I went with the Thermaltake TH280 Ultra EX instead. Thanks!
Thanks for the tip. I was worried about this, but I thought it was fixed, as stated by ASRock. After watching Gamers Nexus, I'll go with the safer option and choose another brand!
Thanks everyone! Updating now with the final build. Some of the choices were made based on component availability in my region.