Most people remember dreams in REM, and the NREM (1-3) sleep cycles is where more amnesiac dreaming takes place especially in the delta cycle of NREM because brain activity is very very low. Remembering a dream in these other cycles is not as frequent because studies show reduced neural activity connecting dream recall to NREM but enough activity for some that recall is possible and that again is likely based on the frequency of dream recall for that individual.

REM/NREM study.
[link to www.ncbi.nlm.nih.gov (secure)]

Here is a study supporting dream recall in NREM as well so we don't get stuck in the idea that dreaming is exclusive to REM.
[link to www.ncbi.nlm.nih.gov (secure)]

The participants were woken up during NREM and some (not all) could recall dreaming.

Since you are having 8 hours of sleep, you should be oscillating through proper REM/NREM thus I don't see that as being an inhibitor for dream recall short of the dramatic change in your sleeping pattern which means you'll likely adapt to it for dreaming with a little practice.

Still a lot of research into this area but another really great study was on dream-replay showing we consolidate memory in NREM1.

[link to www.cell.com (secure)]