Re: hardwood flooring border with carpet inlay
No, your carpet won't be thick enough to cover the transition well.
You have to remember, carpet and padding compress under foot, the hardwood won't, so while visually the two might meet just fine, it's going to hurt your foot and possibly be a trip hazard. You basically need the finished edge of the hardwood to be the same height as the pad. It would be ideal to have a notch for the carpet to tuck into, but not a necessity if you've got a good installer.
I did the exact same thing in my home that you're planning to do now, the only difference is that my hardwood was only 5/8", and I can tell you from this experience that the sharp edge of the hardwood was very uncomfortable on the bare foot. If I had it to do over again, I would install a reducer
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!