Hi there, im just picking up a 2nd hand laptop which i intend to install the XMR cli wallet. Apart from making sure the OS is 64bit are there any other specs that i will need. For instance will 4gb ram be sufficient? does it need a fast processor, how much hard disk space will i need to download the blockchain,  as i was hoping to get a cheap one off ebay.

Also are the instructions on monerotalk.org the best ones to follow regarding installing the cli?

Thanks for any help given.