The Farmer packets are a pain - no extra value to be gained nowadays.
And as far as grafting is concerned, I never take more than one cutting and graft it straight away. It can be annoying if you have to travel for a cutting and then go home for grafting. But it's the safest option. I think you can get away with collecting about 3, maybe 4 cuttings. But it's so risky.
I'm sorry, Playalot, I should have mentioned this before.