I agree with Photobum
Renting equipment is not forever.
For starter, 300W Elektra Century 300 studio kit from Ruby Photo ($800 for 2 strobes, light stands and softboxes) is a good buy. Talk from Ruby people. It is as good as some branded ones like Bowen.
So far you have not mention what kind of picture you like to do in studio.
For starters, with your camera and kit lens will do nicely for some table top still and some portraits with the lights from Ruby Photo.
If you need as help and lesson on studio lighting, you can approach me.