Yes, your husband can own 49%. 35% invites less scrutiny. But as your husband is married to you (a Thai) you do not need to set up a company at all. Spouse visa plus work permit against your registered business is all you need.
As foreigner, you will never get registered in a Thai house book unless you get Permanent Residency .. which is very hard to get and is likely to take ten years.
Getting a Certificate of Residency is easy. It's just a piece of paper that confirms where you are staying. It takes from between a day to a week to get.
You can (in general) arrive on a 30-day visa-exemption and extend 30 days. You should check that your home country will issue a Thailand Pass for a visa-exempt entry.
It's also the law of the land that people applying for marriage extensions can use the combined income-plus-asset method to qualify for those extensions. But I don't know of any province that actually allows it. I know enough to have got by.
Using phrases like "the law of the land" here makes you sound fresh off the boat. Provincial Immigration chiefs have quite a bit of discretionary power. This place doesn't operate like a typical western country.