A multi-entry visa allows you a 90 day stay, after that you could extend by 60 days at immigration 'to visit wife', or do a border bounce and get another 90 day entry.
Be aware as he just said, the new passport may come in one day, but the old one (which you need) may not. You have to stress to them that you need both.
You can only do a TM30 at the police station if there is NO immigration office that services where you live, (totally unlikely), and you sure can't get a cert of residence from the police station.
90 day reporting is done EVERY consecutive 90 days that you are in country. So if you don't leave the country you will do about 4 per year. If you leave the country, then the 90 days starts again on your entry to the country.