-i'd say use a LDC...i always like them better than dynamics for any studio voice work.
-learn to always check your timecode and how long your peices are
ask the video guys if they have a specific length they want you to send them. some don't mind if it's exactly 00:00:30:00...others like it to be 00:00:29:25, etc.
-also (pretty obvious but...) check what sample rate/bit depth they prefer to work with. most video work doesn't go beyond 48kHz, 24bit (a lot of times not even 24bit)
-if you dont have one already, get a Time compression/expansion plugin. they will be your friend!
-definitely invest in an LED timer of some sort for the voice artist. that way they can time their reads out for you and won't have to guess at the pace they need to read at (not a countdown timer, one that counts upwards).
-pop filter
-water for the artist
-comfortable set of headphones for the artist
just a few