obviously 99 crafting is going to be worth alot more than the others.
99 mining will get you the most cash throughout the 99
99 woodcutting is the easiest and fastest to bot and makes a medium amount of money.
therefore try making a few 99 woodcutting bots rather than try at 99 crafting
its obviously a greater skill to achieve but the time in it is too long the the profit is minimal or even loss