I'm not sure that 1. any specific answers you get would be usable and 2. I doubt most small businesses would tell you their profit margin in an open forum.
Rent on space varies around the country (or world) and your requirements are going to be different. For example, if your climate is a moderate one, then you might not need cooling for the summer months, unlike here in the Southern US.
Types of space available also vary. Perhaps in your area there is inexpensive rental spaces with decent wooden floors in large gym size rooms. Around here, most space like that will have a poured concrete floor, thus requiring additional expenses for suitable flooring. So the best advice I can give you is to determine your needs, then spend time talking to rental agents and looking at properties. That's the only way to determine you space costs.
As to some of the other questions. You can easily find out what clubs charge for classes, etc. from their web site. The size of classes and the number of instructors and assistants, etc. have been debated in various threads here n f.net. "Use the search, Luke!"
Profit margins, salaries for coaches, managers, etc. This is going to vary and are often considered sensitive and private information (rightfully so). As a coach or small businessperson, you should have, or be able to develop, a sense for what these are going to be. (And if you don't have a background as a coach or businessperson, then I suggest that you think a couple of dozen more times before jumping into it.)
As for business plans, these are going to vary widely based on the type of club you are envisioning. The plan for a non-profit recreational club is going to look very different from a for-profit competitive club. Craig is sitting in the middle of several decent business schools. An interesting exercise might be to sponsor a class project to develop business and funding plans for several different types of fencing clubs.
It will take work to develop the information you're asking about and to develop the business models and plans that use it. So you have to make a choice, 1. learn the business end and do the work yourself, 2. throw money at it and hire consultants to do it for you (my contact info is available, but I ain't cheap!

), or 3. wait to see what others make publicly available for your use.
John Farmer
Coach, Oak Ridge Fencers Club