For your use case, the i3 would be fine. If you are comfortable following the ifixit guide to open the machine and upgrade ram, then go with the base 8gb. I went with the i5 version, base storage and base ram. I upgraded the ram to 32gb myself. I have a 4tb Sammy SSD in a usb 3 enclosure storing my movies. I upgraded the ram and to the i5 because hardware wise I don't want to touch the machine for years.