@Jean ***************
, okay let's sort out what you are wanting to do. You currently have a year-long, multi-entry VISA that you got from Penang and is good for umlimited entries of 90 days each until Aug 14th.
IF you are wanting to get a yearly extension at the immigration office you can do it any time you have 45 days or less left on your current 90 day entry stamp
Extensions based on marriage are NOT issued on the spot. You apply (with your wife, and all the required photos, documentation, hand drawn map etc) you will get a 30 day under consideration stamp and then you go back in 30 days to get the year extension inked into your passport.
IF you need to travel during the 30 day under consideration period you would need to buy a re-entry permit (AND it will only be valid for that 30 days). Now once you get the yearly extension inked into your passport you would need a NEW re-entry permit that will last the whole year.