This kind of guide is garbage and the purpose of this is not even a guide to begin with but hey at least he got what he want, some attention from you guys and me lel.
Also saying Shisui is f2p is like saying Edo Hashirama is free. Everything are basically free, it's just take many months or years to get. But the term f2p friendly mean ninjas you can get in less than 1-2 months of saving.