I think that the plaid itself is a matter of personal preference (so go for it if you like it), but the fit is something I was looking at. How does the rise of the pant fit you? It looks to me from the picture that the rise is high, but there's some wrinkling around the groin area that distorts the plaid... I'm not sure if that's a big deal or not, but I noticed that first. Also, how big is the moth hole? If it's large it may not be something the tailor can fix.
Thanks for posting pictures so we can see you!