Hey otter. When are you going? I'll be there on my first trip too. I'll arrive at the park on Saturday, Jan. 26 staying thru Tuesday, Jan 29th. I too, am going primarily for a photo shoot. Here's my planned itinerary after researching the board and getting a lot of good advice from the benders here.
Saturday: Leave Austin to SA thru Del Rio to Hwy 90. Stop at the bridge for photos of the Pecos River. Thru Marithon, arrive in park around 2:00 (I'm leaving Austin early).
Stop at the fossil exhibit area - Shoot the hoodos near there.
On to panther junction and maybe drive up into the basin if time allows.
I want to be at Maverick Junction by sunset for my first sunset shots.
Then into Terlingua to check in at motel.
Sunday Up by 6:00 am to get down to Santa Elena for sunrise.
Hike into Santa Elena if Terlingua creek is not up.
Back up Ross Maxwell Senic Drive to see the sights along there:
Cerro Castellan
Mule Ears Overlook
Short Hike on Chimmeys Tr.
Solto Vista Overlook
Maybe a little walk to Burro Mesa Pouroff if time allows
Get a shot of Casa Grande thru the windows.
http://www.bigbendchat.com/portal/forum/index.php?action=dlattach;topic=2840.0;attach=1677 Spend time in the Basin
Sunset shot from the windows
Dinner in the Basin
Back to Terlingua to download all my pics.
Monday: Up early to get to Panther Junction for sunrise shots.
Hike (at least first mile) of Lost Mine Trail
Down to RGV
Rio Grand Overlook
Boquillas Overlook
Maybe a short walk into Boquillas Canyon trail if I'm not worn from Lost mine hike.
Sunset shots at RGV nature trail.
Crash out in Terlingua
Tuesday No specific plans - possibilities are Sunrise at Grapevine Hills
or maybe a trip into Ernst Tajania (if I can find someone to go with)
Rock formations there are incredible.
Drag myself up to Marathon
Wednesday: Back to Austin via I-10
I've got a 2 gig chip and a 4 gig chip along with a new portable 40 gig HD so I'm not going to run out of "film"

I don't know if I'll get all of this done in 3 days but at least I have a plan before I get there.
I'll post pictures and trip report when I get back.
Enjoy your trip!