美國綠卡比較有希望了,還要繼續加拿大綠卡申請麽?

submit 140/485 in 07/2004 in CSC. Hopefully can get it approved before 07/2005 according to current processing status. Just got the 2nd letter for canada immigration asking for medical exam and fingerprint. Should I continue canada immigration application? I applied it for a backupd since it was very slow when I was applying LC for USA GC. Thanks for your help!