I have that torque wrench, no issues with it for the most part. I don’t quite trust the 2nm setting on it, always seems to feel tighter than 2nm so I bought a 1-3nm wrench separately. I love tools so it isn’t a necessary purchase but for me it’s something I wanted. I could have likely been fine with just the wrench you linked.
I use white lithium grease on pedals, my cranks, cassette, anything I want tight but not impossible to remove.
Usually when I need a tool, I just order the tool with the part I just bought.
Finally did the chainrings on my SuperSix. I ordered the crank extractor (SiSL) and the chainring tool (Spiderring) with the new chainrings (Absolute Black). Found I need a new pressfit bearing in the process, ordered new bearings, pullers, and press. I had to buy two BB wrenches for my MTB because the new BB was different from the old (Raceface to Hope). Need to replace the fork seals on my motorcycle, so I ordered all those tools with the seals.
You get the idea.