Building new pc and i need your opinions.

OP didnt ask for a budget pc? 800-900 eu isnt cheap

I got this on my memory since I've recently been curious what I'd build if I'd allocate up to 1000€ :)

What's real life mate?New series?
I head lots of ppl go outside of their houses aswell :O

I hope it does fit my Non brand midi tower though.Its clearly bigger in size compared to my ati radeon sapphire 6870.

My psu is 80+ bronze efficiency and im pretty sure it will be okay!(its like 2.5 yr old one)

Yeah, good recommendation on a new power supply. Especially if the older one is more than a few years old. Sometimes newer tech needs new adapters, like 8 pin power to a video card compared to 4 pin molex or the 6 pin. Also a new power supply will have a new warranty and will last you longer than one that is old that may also break down sooner.

Also I would probably get like a 750 watt, just in case you want to add more hard drives or a higher end video card down the road, so you have the ability to upgrade later, without much more hassle.

Tell me about it - Yesterday instead of buying some of those bundles on sale she's all "You know... I don't like that space saver spare in the wagon... go buy a fullsize rim and tyre and make it fit... And change the lights as well please"....

Can't say that I have. I used to just by a cheap case from the markets and strip/rebuild it to suit my gear - But really loving this store at the moment (PCCaseGear). I bought a new MB/GPU/PSU off them earlier this year, Had a problem with the MB - and they sent me a replacement free of charge, told me to keep the old one (It was working just ram bank 0 kept failing - nps I can run 24gb instead of 32 - still too much :P) and the PSU is whisper quiet - seriously I can't tell if PC is on unless I see the lights.
Because of that I'm trying to use as many Cougar parts as possible - and that case is probably the best looking one at that price range.
You have a link to the Lian-Li cases?