Ok that is whack, the struts are too expensive if you have seen them for that much. Like has been said, get some Monroes they will be as good if not better than stock and run around 85$ each. As for the Valve cover gasket and spark plug tube seal, that is an easy job that your friend could do, maybe 30$+ for the gaskets. Everything your friend and you should be able to except the torque converter rod, idk what that is but all the others you can go the forum home, where all the Gen 3/4 posts are and look for the Camry repair manual and there you can get all the info you need without having to buy a manual. Oh, and yes these repairs are worth it, there are Camrys here with over 300K and most are around 200K with routine maintence and TB's
http://www.**********s.com/camry/
all the info you need