I want to answer your specific queries.-
1) "Can my cardiac history affect the chemotherapy"
You should ask for echocardiography
, if no major abnormality is there chemo can be given.
2) "am I at a higher risk for heart problems?"
In this case generally paclitaxel, carboplatin are used, they do not cause major cardiac problem.
3)" What oncologic emergencies could arise?"
oncological emergency can be febrile neutropenia
in your case.
4)" Am I a candidate for surgery?"
can be operated, but no curative surgery can be done.