I've found onlinemotorcycleseats.net is available and purchased it.
I will use Headway as my Wordpress theme.
Through research I have determined that the following micro niche topics test well:
Waterproof motorcycle seats
Leather motorcycle seats
UV protected motorcycle seats
Crotch rocket motorcycle seats
Extra comfortable motorcycle seat
My question is how exactly do I want to set up my headway website?
Do I want to set up each micro niche as an individual page with a button at the top of the home page or do I want to go into Host Gator and create a separate subdomain all together under Fantastico De Lux?