There are many level to ensuring your site is optimised that is not just text on the page. Page load speed, page name and page bounce must all surely play a factor. This is a nice site that engages with nice images and not ruined by extra text to try an please a search engine.
For keyword content, keep your blog up-to-date with honest genuine content, maybe pointing to a gallery when you update the images.
As far as I can see SEO will become (is becoming) something that reflects good honest and engaging content rather than making sure you have scientifically optimised your site.
Show your passion for your subject and it will be rewarded with visitors interested in your service and products. Try to second guess and over optimise a site and you will be found out , maybe not today or tomorrow but eventually.
That said there are always things to improve Have a look at H1 and H2 settings you have on the home page.
Also notice at the top I did not say it was a quick site have a looks at speeding this up http://www.webpagetest.org/result/141126_61_VQT/ people may bounce away even before viewing your page whatever the great keywords you may have optimised with.
Just my 2 pennies worth, hope it helps