A good staker account

What are the stats of a good staker that can win back to back? Of course it will lose some. But I am wondering what is a really good staker.

And if anyone is willing to give me free membership I will gladly give you 100+ SW auths.

Something with a high defense, and high range/mage probably. Depends on what combat level you'd want to stake at.

Around the 40-60 level range.