Not being rude. Just my dry sense of humor.
I can't help you on the particulars because I'm not familiar with your system.
If you can't find a helper and are definitely going solo, you can do that. You just have to move faster. (That was a joke!)
If you know how to remote fire your speedlight, then all you need is a stand or clamp. An
umbrella (someone mentioned), stand, bracket and speedlight would give you best bang for buck and maximum portability.
If you're asking where to actually place your lighting, that depends on a lot of things. My general preference is high camera left. (Not a joke!)