They have literally announced they're going to try to undo Roe v. Wade and repeal all LGTBQ protections they can. Like, that literally already happened. So I think we're already past the "[won't] enact or seek to promote any racist or sexist policies". I suspect that's because Trump has effectively delegated the entire office of President to Pence.
No mention of ending abortion. I agree that it would be sexist and catastrophic if it happens, especially given the state of american health insurance coverage.
EDIT: from this document it looks like he plans to target undocumented immigrants who have a criminal record -- the process will probably be very disruptive, I think this is the single policy of Trump that could cause the most human misery, but it seems possible that the process could give the others a more secure status.
Also I should mention: that is my prediction as someone who wouldn't be effected (I'm Canadian). If it were otherwise, I would be preparing for the worst -- for abortion that would take the form of looking at international travel options, and thinking about how to conceal it.