Would you rather divorce her now and give her half your shit when it's still small and relatively insignificant, or would you rather suck it up for ten more years and build your empire before being forced to give her half of what you built more or less on your own?
Furthermore, between now and when you finally pull the plug, I wouldn't put my dick anywhere near her baby factory. There's a good chance that if she senses you're coming to a decision that involves kicking her out, she's going to "forget" to take a pill or poke holes in a condom or whatever the hell you guys are using. Keep birth control exclusively in your own control. (Ie: vasectomy, condoms you purchase and keep secure, aim between her eyes, stick to only blow jobs and anal, whatever.) And that's assuming that you can stomach being near her.