You still have quite a few months to go, so you can make the final decision later. But if you really want to go back next Apr, you should plan that to happen, and that you would go as a visitor in the case that COPR has not been issued yet.
By Oct-Nov, you can order GCMS notes (if you have not already started ordering them) to check on progress. If you do not have to interview, and your passport is visa-exempt, you can probably go and wait in Canada as a visitor.
For such a long processing time, you would be asked to do medical at AOR2 stage. I am not sure how police reports are done in Macau. In HK, you do not do that upfront. So anyway, after you have been asked to provide police report and do the medical, you can probably wait out in Canada. These are also indication that your case would be on its way to being completed...of course, ordering GCMS notes a few months after police report and medical report would give more information about your case.
There are no cases of Macau in the tracking spreadsheet, so there are no recent references as to how long it'll take. The stated time is 80% of cases completed within that time, and many cases are completed way faster. For example, cases from Taiwan typically get done much less than 11 months, as are quite a few cases from China (but some cases do take a long time though).