Woodcutting bots are dead man.
Mining ones get you money, and fast. kMiner is pro, good luck finding an Auto Woodcutter that is comparable to kMiner. (Nothing against them, I own one myself, they just aren't money rakes.)
Soul Warring pures would be the most beneficial to you, honestly. People love pures, and especially on Sythe.
Gold4RS will pay a nice sum for 85 mining accounts too.