so, if its safe, should I stick with 8gb? I'm only doing the basics, but if it will help make the system a little "snappier" it might be worth the odd £70 (RAM and the tool kit)?
Yeah it's safe, but more ram could mean snapper experience (e.g. browser tabs don't need to reload from disk, etc), especially 8->16GB will be noticeable.
Sod it
just ordered a 32gb kit, should help with some future proofing and the costs equated to £40 more than the 16gb kit, so there that.
Also a tool kit, its straight forward enough I suppose, its just the scale of things being so so small that bother me a little, but got a quote from a Mac repair / upgrade shop, granted they are reputable but at £85 to do I will try myself.
If there is any issues with the small cables then I will deal with that when (hopefully not) arrises!
Congrats. Generally more ram is never a bad thing, especially if it's that cheap.