So, I have a quick question, I have a main kw I want to target for my new website..finally found a niche I like, but the EMD is available, should I just avoid it....or it is just that I won't get a boost from it? Additionally should I avoid long tail keywords for my domain?

Additonally, if there is a lot of comp. for my main keyword, but for my "[product name] review" there is amazing results...do I still go for it?