My 2013 Nissan Versa SV is sitting at about 125k miles and we neglected to change the spark plugs at 100k. We have seen no issues with misfires and no engine lights, but we are changing the spark plugs this weekend like good little car owners. My question is, since changing the spark plugs in this car is a pain and we plan to use it for at least another 75k miles (hopefully), is it worth replacing the Ignition Coils at the same time? They are pretty expensive, and i have heard that they typically do not need to be replaced unless the car is misfiring or there is an engine light. And if not the whole coil, would it be worth replacing the boots, since those are about $10 each?