Woodcutting is rarely ever more than 100k an hour anywhere at all ... f2p or p2p
Mining is better.
Rune Essence - ~15k an hour
Clay - ~50k an hour? There are new clay mines, will make it easier to bot them, but I guess the prices will drop
Iron ore - ~30k an hour
Coal - ~15k an hour
Runite - Never tried mining in F2P, assume it's ~150k an hour