A mono shock conversion can work quite well, but as Wookie58 points out, there is a lot to consider. A couple of members here have done that conversion, so there are some build threads and they may be willing to help if that is the direction you want to go. Any major modification will require some important engeneering problems that can affect other functions of the machine. Feel free to kick around ideas. Once you settle on a plan, I am sure you will have plenty of help from the membership.
Part of what SWest is alluding to is that there have been several new members here who have started out with great enthusiasm for a bobber or brat build, but few of them get finished. By all means, dream big, but when it comes to actually building, please keep in mind your ultimate goal for owning the bike. Show bike? Touring bike? Drag bike? Also keep in mind your resources for making that happen. Do you own a fabrication shop? Have the money to pay one?
with a realistic plan, you can come away with some new skills, some new tools, some new acquaintances and a finished bike that makes you smile every time you look at it.