niche – yes.
Be unique. There are a zillion gambling sites online – and you don’t want to be one of the big mass that all looks alike and has the same content.
Don’t be afraid to make your site appeal to a certain group of people. You really can’t please everyone, so just make sure you please the group you know somthing about and understand. Who do you want to like this page? Young males? Older males? Young females? Older females? People who are new to gambling? Experienced players? You can adjust the look and feel and content accordingly.
Build the site for the visitor, and then optimize it for the engines, not the other way around.
Your front page – it has so many fat print casino terms I can’t get myself to read it. It’s irritating.
You don’t have to do this fat print thing, it’s an outdated seo technique. And you way overdid it. And make the Phoenecian banner smaller – 250×250 is plenty big. I almost stopped scrolling when I hit the banner because I could see nothing below it.
I like the personal approach of the writing. It’s a good start, you haven’t made 80% of the mistakes most newbies make. 