look at a single 2gb before buying two 1s. There is already at least one in there, so you would be adding on top of 2, rather than adding up to 2gb. get the higher clockspeed chip too (mhz).
I started one in Jiffy, but lava rocks impeded the roots, the pellet was just fine though. I am in the same situation, no hydro shops for hundreds of miles. Even if the pellet does disintegrate, you can just add more medium to compensate. Jiffys were my choice after researching your same dilemma.
They will yellow up when the plant needs the nutrients. Typically an N deficiency; I would fill your pot right up to those round leaves (cotyledons), or as high as you can, with a good soil containing nutes. This will feed the plant a little while longer until you need to start adding your own...
Stay out of the military unless you want to fight Bush's daddy's war. Goof off for a while and do nothing. Get your head on straight then go to college.