First self build opinions wanted.

Thanks to you all for your responses they were so quick.

I will have to have a look at those fans to see what they have, but would I need the extra fans or is it just recommended to help with the cooling of the system. Also what are the best set-up for fans. The case I'm looking at has a 120mm in the front drawing air in then another at the top rear to exhaust the air. Is this the most idea set-up? Also should I use my psu to draw heat away from my gpu or not?

I did believe that the 770 was better then the 280x but had to ask also with future in mind people have said a running duel gpu's? Is this worth it??

As for the ram I keep being.told go 8gb as that's enough is there currently really no benefit for more ram then?

Thanks again all. :-D

Thanks again JOHNN93 for a fantastic answer it has answered quite a lot.

I have one more thought and then I hope that I have all the information that I am going to need to get this build running and that would be what would be my best options for Multi-Monitor Set-up.

I was not thinking about doing it to begin with but have been reading alot and watching alot of videos on Multi-Monitor set-ups and have to admit that I am definitely considering this to be an option for me, I have my eye on a 3 x 24" 1080p monitors to run them for gaming. The biggest problem that I have is quite simply how compatible my build would be with doing this? Also would I need additional adaptors for this as I do not believe there are 3 monitor ports on the card that I have chosen. I have also read information that says my Gtx770 4gb GPU would not support 3 monitors is this true?

Like I mentioned from what I have read it appears that I would require 2 gtx770 4gb GPU to run a 3 screen set-up. Second to this how easy is it to set this up? and would I be able to play games like Crysis 3 at High settings? I understand these questions might be difficult to answer with definite answers but any more information that you can give would be great.

So to summarise this, I would like to run 3 24inch 1080p Monitors in eyefinity (if that is what it is called I keep reading it but I am still unsure of what it means) to play games with all 3 monitors at once. I would like to know what changes are recommended to make to my build above to make this as easy and pain free as possible, or would it be better to get a larger single monitor without making any other changed?

Thanks again to everyone I know I have asked a lot but I am hoping that this answer does not raise any more questions. I am open to changes as this build was initially supposed to be around £1200 but have creped with new monitors and additional gpu to around nearly £2000. So maybe that does raise another question, maybe there is something else I could build for around £2000 that would fit my needs and be better all at the same time.

Thanks all!

So ok I have managed to possibly answer part of the questions myself, with this particular gpu (4gb) I will not be able to run 2 cards It appears that they are not compatible with sli/crossfire so this could not happen anyway. Also from what I have been reading tonight on this card there is not really any difference performance wise as apparently the gpu is not powerful enough to use the entire 4gb of memory, not too sure what this actually means so has anyone read/experienced/know anything different to this?

Also I am thinking that if this information of not being able to utilize the entire 4gb I might change it out for the 2gb edition and save myself £35 unless like I say anyone knows any different?