Humbug...I was unsure when doing mine...When looking about to buy, I too was recommended 98 links, but ended up taking it down to 96. Most people on here said 96 would work...and it did! I'm presuming you've got the chain tool to do the job? If so, it's pretty simple to pop the extra links off. I'd never changed a chain before so was a bit apprehensive. If you need to shorten it, just grind the head of the rivet off with a Dremmel and use the chain tool to press it out, job done. So you could plump for the longer chain just for piece of mind.
Thanks - I don't have the tool, and I'm also living in temporary accommodation with no access to my main toolkit. I recently did a bike mechanics course, but after breaking two of the cheap chain tools while working on an old (and pretty seized) chain, I don't have the confidence to do it myself. My intent was to buy the chain and sprockets, and run it over to my mechanic in Park Royal.
Regarding chain tools, it would seem the super cheap ones are pretty easy to break. I went with the 'DID copy' recommendation on here and it was just fine, seems a pretty solid bit of kit...bit fiddly though...but that's probably down to me never having used one before.