Mage logs are not F2P. And i would recomend just mining addy, and depending on were you mine at you oculd also mine coal while you wait for the addy to respawn, further increasing ur profits.
Get your def to 70. Then go to 65 str then raise atk and def to 80 and 80. And i would recomend barrows (not sure bout this) since if its staking you wont lose it.