So I am getting ready to get into podcasting, and also just recently got a gopro hero 4 black and want to be able to edit some 4k video as well as do the audio editing for my podcast etc. Best Buy has a great deal on the 13.3" 2.9 with 8GB of ram and 512 HD. My questions are is this enough for what I am wanting to do, and down the line can I upgrade ram or is it now soldered and I will be stuck with the 8GB?