If i was to get an i5 now could i replace it for an i7 later?

[ts2fe]

Could i? The motherboard is a Asus Z97-A motherboard.

 

[MeteorsRaining]

Yep you can

 

[ronintexas]

There are sockets and supported processors for the Intel family of processors. As long as you keep in that generation of processor, it will be supported. The core i5 and i7 processors share a common socket within their "generation" of processor.