US citizen marrying a Canadian citizen?

Here's the deal: I plan to marry my fiance, who is Canadian, while she visits me in the US. (She will tell the border officials that she is just coming down for "a visit.") After the marriage, she will stay with me and we will submit the I-130, I-485 & I-765 doents (among others). Technically, as a Canadian, she is legally allowed to stay in the US for 6 months without a visa. We're banking on at least the I-130 & the I-765 (employment authorization) to have been processed by then (which is why we are byping the I-129F application). Am I missing something here??? Besides the fact that she wouldn't be telling them at the border that she's coming down to get married, does it sound like we're good to go on this? Has any American citizen out there gone down a similiar path with a Canadian citizen and can give us some tips? Thanks!