Question about buying Domains and forwarding them

N00b question...
I've searched around and can't seem to fine the answer.

I started to use Market Samurai to locate some good keywords to target, for a company I am starting (A real physical business not affiliate IM). I have a website that I put a lot of time into and will be doing a lot of WhiteHat SEO to build my ranking through time. My question is, when I find these good keywords through MS, Would I be able to purchase an exact match domain and forward these to my actual site and rank faster for those exact match domains? And would I just do the normal 301 redirect or should I mask the domain? And If i use Blackhat on these domain and get sandbagged would they affect my main site?

I need to show up for certain keywords faster than it would take to organically grow.

Thanks in advance

Thoughts/Opinions/Advice?

Jut buying some domain won't get you magically ranked. A domain is nothing without content and backlinks

I know this obviously, but it would be easy and quicker to rank for that domain. And that is what I am after. My question is that when I buy the domain and have it forward the domain to the specific page with all the content, it should rank quicker because of the domain right?

For Example if My company sells Fruit and is entitled TheBesttFruitDotcom and Im trying to rank for Red Apples. If I already have an entire section on Red Apples on my thebestfruitDotcom site, my question is if I buy RedApplesDotcom and then forward it to that specific section of my larger site, I should rank faster since the domain is keyword rich?

Granted I have content, backlinks, its optimized, etc. I'm not saying all I do is buy the domain and Im #1. Im specifically asking about the domain portion of the whole package.

no need to by more domains and redirecting to main site .. if you do black hat on other domains and it got penalize , it make that effect on your main domain too.. i wont help you out