[aertergaery]

Are they arriving on the same shipment/consignment?

Negative. The RAM arrives today, and the GPU is still very much in the method determining stage, mainly due to my own hesitation and inexperience with such valuable items (I'm deterred by the possibility of the SE going wrong and not being given the chance to properly return and refund the real item - any knowledge that could alleviate this?).

For the RAM, I intend to use EB or DNA, though am torn between the two, as I've only had previous success using EB for airpods pro.

Are you still planning to use the sealed box method?

Again, this is still very much in the works, but from what I've deduced, it seems like the most fitting approach (in the event that precautionary measures preventing DNA are in place).