I go with the vein here. Yes, what you have is fine for now. The Zone System is intended for use with B&W sheet film for complete control. It can and has been adapted for roll film use. For years I had no spot meter. Only recently picked one up. And I got a steal at $130. For many years all I had was a Weston Master IV handheld meter and that was more than enough. You just need to learn to use it. But until you see the need for one in your resulting work I would not concern yourself with getting any meter at this time.