I think that if you take your time, you'll do fine with the extraction.
You'll need a replacement bolt of course, and you might need to buy a set if they're not sold individually. Or you can easily get replacement bolts from a U-pull junkyard, if you have one of them close to where you live.
Also, you naturally don't want a repeat of this issue again. I'm guessing that you didn't use a torque wrench to install these bolts, and if so I'd strongly urge you to buy and use one of those tools. And it's also possible for bolt breakage like this to happen (even when using a torque wrench), if there is any debris, such as oil, coolant, gunk, ... in the bolt holes. So if you didn't completely check and clean out the holes and the threads, by all means do that on your next attempt. Good luck with it!