Here are my opinions regarding the MBP and Retina MBP (rMBP).
If you want the flexibility of upgrading your RAM and internal storage, you may want to consider the MBP (non-Retina). It also has a built in optical drive. So, you can buy a stock MBP then upgrade the RAM and/or storage later.
The Retina has a very nice display and less glare, but you cannot upgrade the RAM. It's soldered onto the mainboard. The flash storage CAN be upgraded by using 3rd party vendors such as Macsales.com (OWC). So, you will need to figure out what you need RAM-wise when buying an rMBP. If you need an optical drive, you would have to purchase it separately (e.g. SuperDrive).
The 13" MBP and rMBP use the i5 dual-core processors. No difference, in my opinion. The different speeds (2.7GHz, 2.9GHz) over the stock of 2.5GHz will gain you very little noticible performance.
For your editing, I would think either is fine, but the Retina would be "prettier". 🙂