Born-haber cycles

Can someone check if this is right because the examples I see seem to do ionisation energy of Ca before its atomisation.

Bit messy sorry

Also is the electron affinity bit correct?
Because the one on the notes has a + e-. But i thought electron affinity was removing electrons.
Im also not sure if the final arrow is down or up?

Electron affinity is adding electrons, ionisation energy is losing electrons

For the final arrow you just need to think about whether the reaction is exothermic or endothermic (exo = down, endo = up)

Ah right but how would you know if it was exo or endo?
Would you have to calculate it? Or is there a simple way?

Ionisation energy MUST be endothermic as you are breaking the electrostatic attraction between an electron and the nucleus.