I would argue that, yes, the person could behave immorally. Actions which harm the person, without benefit, are immoral.

Morality for the person is based on the metric by which the person measures happiness/fulfillment/success.
All actions which do not affect that metric are amoral.
Actions which improve the metric are moral.
Actions which reduce the metric are immoral.

Specific answers:

.1. Yes
2. No
3.
a) No
b) Only if it causes psychological harm
4.
a) No
b) Yes
c) Depends if more self-actualization/fulfillment is gained than the suffering, as judged by the person
d) No
5. Yes
6. Perfect questions, wouldn’t change a thing