I say shut those voices off. Espically if this isn't the norm for you to spend this kind of money. We deserve a few rewards once in awhile.I am a pretty frugal person but also have learned sometimes its not about saving the money, somethings are just worth the higher price and I beleive sewing machines are one of those things...says a person who bought a cheaper machine from wal-mart...lol. And I personally don't think you would be happy with the one from wal-mart.
Go, enjoy your new machine.....congrats on your new baby.