DIY replacement 2g screen ?

Upgraded to a 4 so my old Iphone is going onto Gumtree ! It was replaced last year so other than a screen issue it now has..... is 100% perfect. No dents and not a single mark on the back.

Now, should i sell it as it is? the screen has 2 scratches right at the very bottom of the screen (Fresh cut keys in pocket..!) and small patches of what i would describe as "wonky Pixels" ! the rest of the screen is great.
Now i know the screen is made up of 2 x layers??? and both of these are not expensive to buy on ebay etc. Fitting looks very easy !

Is it worth me doing this first or just letting it go?
And will the first layer of the screen kits cure the "pixel" issues ?

many thanks

Depends on how much it cost to replace the screen. The last time I checked it was around 200 dollars. >_>"

DIY its about $50 complete with all i need. The screen is pre assembled with glass etc so its 5 min job.

I have just offered it for sale as it is on Gumtree and getting many people interested . I can still use phone just small patches of pixels corrupted .