(HCG, nolvadex...both not otc) OTC supps Tribulus, Maca, Avena Sativa, ...There were a few others, I can't remember off hand its still too early in the morning for me.
Usually for hpta I would use nolva/hcg. Next cycle I might try arimidex/clomid or femara/clomid like what you have planned. I don't really think you need much more than that personally. Tribulus maybe, but I would be inclined not to waste money.