Low budget: Wait for a MacBook Pro or get a MacBook Air? [on hold]

I’m willing to buy a MacBook. I’d use it to code and minor Photoshop and video edit stuff. I live in Brazil - Macs are really expensive here.

I found some deals and I can get a 13” Macbook Air 1.4GHz i5 4GB Ram 128GB SSD for R$ 3250 - ~1200 dollars. However, I’m afraid of it's performance.

I can get a Retina 13" MacBook Pro i5 2.6GHz/8GB/128GB SSD for R$ 4300. That’s a huge difference, but If it’s worth I’m willing to save money and buy it. What are your suggestions? I’d like to hear from who’s used both of them!