This Gig is powerful. Be warned. There is no generic anchor text on the Tier 1. The keywords you provide are used as anchor text. This Gig should be ordered if you already have enough generic, branded and naked url anchor text and you need a kick in the serps.
This is a great way to help build up your anchor text ratios of certain keywords and/or dilute the number of links to certain pages / urls.
Total number of Tier 1 links will be approximately 150. So if you give 5 urls each url will get approximately 30 links each.
However I recommend just linking to 1 URL if you are looking for more power. On this Gig we are using 100% the keywords you provide and no generic anchor on the Tier 1.
Tiers 2,3 and 4 we are using generic anchor text but the Tier 1 is 100% money keywords.