Mac Book Air - What spec to get?

[v15ben]

I'm finally looking to switch from my crap old laptop to a new MBA.
I'm just wondering what spec to go for.
I'll be using it for photo-editing on Lightroom, essays/presentations for uni, films/apps/internet/CS/probably some p**n...
I'm wondering if the 4GB RAM and 128GB memory is sufficient for someone who doesn't use it for gaming or video editing?
My only major uses causing a strain would be photo-editing + storage + watching films I think.
I'll also have a decent sized external hard drive too.
Or is there an argument that an extra few quid for 8GB RAM will be worth it if I keep it for a few years and newer programs etc need more RAM?
What do you guys think?

 

[Rubicon_]

I got the 8gb ram upgrade with the i5 and 128gb hard drive. Been faultless since last year, runs everything perfectly!

 

[Tom]

Ram you cant change, so get the most. The SSD's can be swapped out.

 

[v15ben]

Thanks guys.
Azza, your spec is basically what I'm going to go for I think.

 

[Al_G]

Go for a refurb and save yourself some $.

 

[Tom]

Go for a refurb and save yourself some $.

Yes! Do this

 

[Al_G]

Yes! Do this

So many bargains to be had.

I can only presume not everyone knows about the refurb store.

 

[v15ben]

I thought a lot about refurbs, but the spec I wanted was 650 quid brand new over here.
It wasn't that much cheaper for a refurb, so I ordered new today.
Delivery date is August 15th.
Getting rather excited!

 

[Darius]

I thought a lot about refurbs, but the spec I wanted was 650 quid brand new over here.
It wasn't that much cheaper for a refurb, so I ordered new today.
Delivery date is August 15th.
Getting rather excited!

How so cheap?

 

[v15ben]

I'm in the USA currently.
That was from the Apple store as well, so much cheaper here.