Antec 902 Help

[ST34LTH]

Im planning to buy the Antec 902 but it seems pretty big i have a corsair 650w PSU and im not sure everything would reach.

Another question i would like to ask is that is it easy to work with?

this is the first time im gonna be taking out the mobo and everything out my old case so the last thing i need is a hassle getting everything inside.

Thanks a lot for your help

 

[ST34LTH]

Im just worried about transferring it all from my old case to the new one, im scared i might mess something up so ive decided not to buy a case

Thanks for all your answers though