Boot camp was being a little troublesome with just the stock drive. Certainly enough space, but after upgrading to High Sierra OS/X was getting a little more finicky than usual with the whole dedicated bootcamp partitioning thing. After having tried a few other more conventional things, DVD drives refined, etc, I figured I'd install a whole second drive, formatted as MBR, for Windows (7). Works well and OS/X and Windows don't trod on each other. (As a last caveat, Windows on first physical volume)
Excellently. I don't always "spring" for tools since I have my share (and I quoted spring because cost was quite reasonable), but I am glad I did. Everything was there so I could go through the process without having to get up and hunt for tools, etc. All I needed to provide myself was a little bit of table space to set up so I could lay out the removed parts. Plus the tools, detail things like the "spudger" / pusher thingy, were seemingly innocuous at first but super nice to have on hand. Attention to detail in the kit is stellar, and keeps the flow of the repair so smooth I was really impressed and enjoyed the experience all the more.
Not that isn't already in the guide. Precise, crystal clear documentation and standardized hardware, there wasn't a single moment-of-toughness or gotcha spot in the whole thing.