A pizza oven hits 900F and space above to create a jet stream which cooks the toppings. You can get by with a regular oven but it wont be like a pizza from a pizza oven
I figured a regular oven wouldn't be as good as a pizza oven, just hate to see someone "roadblock" themselves. FWIW I used to finish my pizzas by putting them under the broiler for a minute.
If you don't have a cast iron pan, you should get one. A basic Lodge does the job as good as any (it's just a hunk of iron). It's super easy to use a cast iron pan to make pizza.
If you can afford the space or whatever, and want one, get a pizza stone. I have never used one, so I can't comment on it. I have used my 12" cast iron to make a lot of pizzas and there are many "cast iron pizza" recipes out there. It's super easy and it's one of the very few things that I can say I've yet to totally screw up cooking.