Originally Posted by
europa
Those removal tools aren't expensive and you only need the right sized spanner as well. Well worth having in the tool box.
As TT says, 2 teeth = a quarter inch, you'll be fine (the chain will move 1/8th inch for each tooth).
Thanks again europa. I realized I have a 15 mm cone wrench on the back side of my Park Tool chain whip, so should hopefully just need the Shimano 4-prong tool.
I'll update this thread with anything as I try it next week once I get the parts, even if nothing goes wrong just in case it's helpful to other newbies.