GrishnackhI'm a Apple Certified Macintosh Technician (ACMT). I work on them for work but I use PC's personally. Knowing that you will be doing some edits on the system, I suggest steering away from the Macbook Air. It's price point is tempting but you aren't really getting a whole lot of computer compared to what you will be able to to with a 13 or 15 inch pro.
I recommend at least 8GB of RAM. 16GB depending on how serious you are about video/photo editing. The Adobe creative suite contains pretty resource hungry applications and if you want your computer to handle it efficiently then you will want the RAM to back it up.
The processor is not as important as the RAM but it is something to consider. The i7 that are in the 15 MBP retinas right now support hyper threading (google it), which the Adobe creative suite will take advantage of. But an i5 will handle it all the same.
As mentioned before in the thread, knowing your budget is important, then we can know what you will be able to get away with.
Feel free to message me with any questions.
my i7 mb air benchmarks better than a 13" mbp at the same price range. 8gb i7 with the newest integrated graphics for like $1300 is pretty decent. To get a dedicated graphics card you have to buy the $2000 + mbp. Either buy a pimped out mb air for $1300 or a pimped out mbp for $2500 you choose. lower end mbps will be $1500 for the very base model and will perform the same as a pimped out mb air.
I used a mb air for a couple years of casual editing, it works fine, I could get shit done on the road when i needed to and when at home with a huge monitor attached to it.
That being said OP its late night and I dont wanna sleep yet, so im gonna toss you some recommendations.
#1 recommendation, only buy refurb products directly from apple, new products will have tax and you might get an education discount, but buying directly from a 3rd party website save you more with no tax.
MB air option $1229 to your door. 2.2gh i7, 8gb of ram, 128gb SSD (265 option is $1399 if you so please, but I always use externals)
http://www.bhphotovideo.com/c/product/1128911-REG/apple_z0rh_mjve3_13_3_macbook_air_notebook.html
MB pro cheap option (equivalent to mb air option) $1549 3.1GH i7 8gb of ram, 128gb SSD (again 256gb option is $1585 with 16gb of ram)
http://www.bhphotovideo.com/c/product/1128942-REG/apple_z0qm_mf8394_13_3_macbook_pro_notebook.html
MB pro pimped out option $3000 2.8gh i7 16gb ram 1tb SSD and M370X graphic card
http://www.bhphotovideo.com/c/product/1151725-REG/apple_z0rg_mjlt24_b_h_15_4_macbook_pro_notebook.html
oh that last one is nice
Refurb is always a great option too
pimped out 13" mbp for $1699
http://www.apple.com/us-hed/shop/product/G0QN1LL/A/refurbished-133-inch-macbook-pro-27ghz-dual-core-intel-i5-with-retina-display
cheaper mbp with i5 processor (slower) $1269
http://www.apple.com/us-hed/shop/product/FF840LL/A/refurbished-133-inch-macbook-pro-27ghz-dual-core-intel-i5-with-retina-display
anyways, browse the refurb section, lots of good deals on middle ground stuff, not worth buying new but refurb youd get a decent deal if you find the right one
http://www.apple.com/us-hed/shop/browse/home/specialdeals/mac
I'll vouch hard for refurb from apple, I bought a pimp 17" mbp a few years back for like $1900, it shit the bed, logic board busted some shit, and they gave me a brand new 17" mbp worth $3000, worked out well.
That all being said, looking at some of these 13" mbp prices, you couldnt go wrong with the i7 13" mbp for $1549 but the 13" mb air for $1229 would perform basically the same, have longer battery life, same inputs and shit, little smaller. Whatever works for you.
If you can blow some more cash you could get a refurb 15" and it would be worth it as well. I don't really recommend buying the i5 versions to save $100-200 because in the long run you'll be stoked you went with the faster processor. I hope this helped