To be honest, if you can just find a "safespot" where the vampyres can't get to Ivan because of obstacles around him and you being in front of him, you don't even need that stuff. It's just a percuation in case he does get attacked. When I did it, I failed miserably the first time cause I let him get owned lol. Second time I just hid next to a fern/plant and vampyres couldn't get to him.
Give him 15 salmon, steel medium, chain, legs and a blessed silver sickle. Also, try to hide him behind obstacles while you kill vampyres. In aid of the Myreque
Make another silver sickle (silver + sickle mold) then take it to the Nature Altar and use it on that. You can get multiple if you drop them after you enchant them, then pick them up later.
There's a pretty good market for green and blue dragon hide. Studded (T) has a rather small market mainly because there aren't very many (if there are any at all) (T) chaps. That discourages people since they can't get a set.
Hm, I'm not sure about that rock cake. I know Nitroglycerin friom the Digsite is pretty good. It was either 15 or 25 damage when you drop it. I'm assuming you want to use it for Dharoks in Pest control or something?
For F2P players, 65k is a pretty good price to buy them for. I've seen people in World 1 buying for 100k+ and a lot of times 150k. It is easier to find 70k prices on member's forums though.
If you're going purely for money, I would not suggest high alching steel platebodies (as stated before). If you want the magic exp, they are ok. Otherwise, you are better off selling them for money. You could also try high alching green dhide, if you can find cheap sellers.