Hey, Cellar.
If you didn't overload recording in your MR8 your tracks won't be overloaded in ntracks. So don't worry 'bout it.
The reason commercial CDs peg the meters near 0dB is because they're trying to sound the loudest on the radio. It's a shame really. Here they have 40dB more dynamic range than vinyl and the way they squish everything they could get by with 20dB less. They are limited to the same 0dB the rest of us are.