Adding Japanese Chisels to your tool box is a big decision. Not only are they fairly expensive (if they're any good) but they demand a pretty specialised approach to using and maintaining them. Here are just some of the hurdles you'll have to cross,
-if you use a honing guide there's every chance it won't accept some or all of your Japanese Chisels, very few honing guides are designed with Japanese Chisels in mind
-grinding is sometimes tricky because there's every chance the bevel side won't be parallel to the non bevel side, so placing it on a tool rest can often result in an angled bevel
-some honing media, like oil stones for example, may struggle to make any impression on the very hard sections of the laminated steel
-most (not all but most) Japanese Chisels are made with softer woods in mind, the brittleness of the steel can easily mean chipped edges on very hard timbers or if you exert even a tiny amount of leverage
-they rust very easily
-setting the hoop on the handle is a few hours work if you've not done it before, you'll probably need to make a couple of little gizmos to do the job neatly
-they're virtually all metric and it's tricky to find some "interim" sizes. For example I find 3/16" and 5/16" chisels to be really useful for dovetailing, I've found one brand of Japanese Chisels that has the equivalent sizes, but it wasn't easy tracking them down!
There are solutions to all these issues, but they're often a faff or expensive. I enjoy Japanese Chisels, but in all honesty there's nothing they provide that I can't achieve with western chisels. So by all means have a go, but just be aware of the headaches that can accompany them, and certainly don't buy one expecting it to be some miracle tool that will transform your woodwork, if you do I guarantee you'll be dissapointed.
Good luck!