idolw - 6:13 am on Oct 15, 2009 (gmt 0)
Are you 100% you must be #1 for this keyword?
Are you 100% sure the traffic from this keyword will be so huge?
How about getting into Top5 for a 1000 easier keywords by using well-done content and extremely diversified anchor texts? This will not only deliver more traffic but also should be safer in terms of penalty.