How many kills/assist/summoners blown minimum from enemy for a 5 man bot cheese to be worth it?

Basically a coordinated effort by all 5 man, assuming the enemy bot lane comes to lane slightly after both side minion waves fight. Basically 2 man pretend to farm and 3 man(bot, top, jungle) ambush in the bush:

Top lane probably has to TP top. Mid lane will be late to lane. Jungle will be late, lack leash, and potentially even have a buff stolen.

The positive side is, the enemy bot lane will probably be zoned out the for a good amount amount of the early game as a result and be under CS and level if things go well or ok.

In your opinion, what does the enemy bot lane have to blow minimum for the cheese to be considered at least "worth it".