OOOOOh, nice. I’m after a nice small knife for a bout in the garden.
On the site there are a few things I went to click but they we’re linked. e.g. the Knives, Customisable & Leather bits at the bottom. They should link through to relevant pages. Also your website homepage title is home, ideally the browser tab should come up with the company name, which I too have now forgotten.
As for the other SEO stuff, read it all, if it seems like a logical thing that makes sense or will make your site better for visitors, do it. SEO gets a bad wrap because of the various people selling snake oil, its not a voodoo art but more a form of best practice to make sure your website is as effective as possible.
I would look to add more text to the home page, and other pages but only if you can write more about the products in a natural way.
Might also (for unknowing folk like me) be worth saying what knife might be best for what (if its not in the name).
On another note my BiL runs a game/fishing/countryware shop, are you interested in supplying commercially?