C kites aren't dangerous... I don't know who said this but I certainly didn't...They do take some getting used to and some good flying skills but there's no reason modern C kites are more dangerous than other kites from a safety system point of view.
You need to get more familiar with safety systems and perhaps have an experienced wakestyle kiter explain to you on the beach the difference with standard safety VS suicide mode. All modern bars have the option to easily and quickly switch from standard safety to suicide mode. Yes, if you ride in suicide mode (which almost all wakestyle kiters do) you are taking more risk and it would not be recommended you do that at your level.
You're also asking about kite size without telling us your weight, average wind in your area and the location where you kite (flat water, ocean, etc) ??
This video will help you get familiar with different kite shapes:
I don't think getting a Pure C kite is the best idea for you at this stage. Take some time to really determine your preferred style of riding.
Just use your current kite for a little longer and see if unhooking and wakestyle tricks is really something you enjoy and can get good at. Think about it, you're just up and riding and doing transitions. Work on your pop, jumps, rotations, toeside riding, riding blind, downloops and kiteloops, unhook raley's...all of which you can do just fine on your current kite. If you can do all of these by the end of this month, then buy a C-Kite and you might get sponsored by next season
Christian