Hi Congrates!! You'll have a ball of a time there!!
Just my 2 ct worth of a typical space mission,
you'll need 6 months worth of toliet paper....no. make that wet wipes. 6 months of programme to keep one mind occupy, food supply (ba kua incl.) lots of aluminum wrap rolls (to protect your cams from frying solar radiation .....x 2 for yourself!)..lots of calcuim anlele milk powder, spare cam body and lens....(make it 10 set! cause the nearest hareware store is 6 months worth of journey.Nasa had purchased the 48 nikon set of D2XS, 225 En-el4a batteries!! go check http://www.dslrphoto.com/2007/08/05/...-dslr-cameras/)
plenty of SD/CF etc cards .4 laptops, 180 G hardisk, x 10 500G external hardisk unless you wanna download to your photo album. that will take 20 minutes to reach earth. ...(but hey you got all the time in the world (i mean mars!) give up smoking,give up drinking if u can (if you u)........
Phew! some camping trip huh?
Have a safe trip!
remember ....in space, no one will hear your scream!!!.....