Do I need visa to enter Canada

My I-485 pending and got my travel document and EAD. My hu*****and and I are planning to travel to Victoria and Wistler in Canada. We will drive accross the border. My questions are:

1) Do I need visa for a one week stay in Canada as a Chinese citizen in I-485 pending status?

2) If yes, where shall I apply visa (any link?) ? How early shall I apply?

3) I have two pages of travel documents, does it mean I could only use advanced parole twice a year? If there is emergency or special occassion, may I get an extra copy from uscis?

Thanks a lot!!