Web analytics is not easy but needs a proper approach to get succeeded. You should start with simple, start free, focus on inputs and outputs to make the reporting more robust and just fall in love with the SEO. We personally recommend that you should not buy expensive software packages in the beginning to start web analytics efforts for the small business.
Sometimes, the high-end packages are so expensive that you could not understand them at the first attempt only. The best idea is to opt for free packages like Google analytics that can be implemented for free. At the later phase, you could plan for more expensive packages as your business requirements grow.