What are the most desirable properties to choose prior to rendering a video in MPEG, for uploading to YouTube.

These are the properties I've set for rendering a video to MPEG--but the editing program freezes at around 40% of the rendering process....

MPEG-4 Files
24 bits, 1920 x 1080, 30 fps
H.264 High Profile Video: 15000 Kbps
48000 Hz, 16 Bit, Stereo
MPEG AAC Audio: 192 Kbps

These are the current properties of the video:

NTSC drop frame (29.97 fps)
MPEG files
24 bits, 720 x 480, 29.97 fps
Upper Field First
(DVD-NTSC), 16:9
Video data rate: Variable (Max. 8000 kbps)
LPCM Audio, 48000 Hz, Stereo