What would be a good video editing computer? Would a late (2013), retina display, 16 GB RAM, 256 GB HD, 2.6 GHz Intel Core i5, MacBook Pro be suitable for editing video?
Yes, it's powerful enough, even to edit features ... as long as:


you use low-resolution proxies (copies) for long projects.
you edit from an external drive with USB3 or better and not from your computer's HDD (avoid stuffing your HDD with large data files anyway).