I have a Lv.65 Zoroark I would be able to breed. Geodude isn't in my box yet, but if you give me some time I can capture a Graveler from Challenger's Cave and breed it to get a Geodude (I need this for my Pokédex NEway). As for Regigigas, I do have one, but I can't breed it or clone so I am hanging on to it for the time being; if I can acquire a second clone from my source, I could trade it and complete your request. If I get it, this would be a Lv.1 Regigigas which was acquired by the original source with the help of an Event Arceus.
My FC is in my sig. Feel free to send me yours and I'll add it, and we can discuss the trade once I have everything ready. Two out of three can definitely be done, and Rayquaza would be useful to save me having to transfer it from Emerald after I complete several games.