Get a site saw like a Scheppach TKU, or a JET which is a lot cheaper. 315mm blade, 90mm cutting depth, POWERFUL motor, light and portable (<50kg). You don't have to remove the riving knife for deep cutting or rebating, only the guard. It's quite safe as long as you still use a pushstick. But maximum care needed as the blade exits the cut of course. I've never had a kickback deep cutting - the timber is by definition usually bulky enough to have plenty of inertia, and never, ever take the riving knife off, it's set just below the blade crown.