I am a photographer working with 60 MB Raw (sony alpha) files. A shoot can include up to 250 of such files that I upload in photoshop and lightroom on my iMac. It is getting too slow. I want to buy a Mac Mini with the 4MB chip, 16 GB memory. I already have 2 external SSD cards (2 TB and 4 TB) to connect. My questions: 1. Will 16 GB memory be enough or should I go for 24 GB? (Not cheap). 2. Must I opt for the 1 TB internal drive instead of the standard 512 SSD? (Internal SSD extra capacity is very expensive at Apple).