BOOK cover design - $165!

A new book coming out needs a cover design. The challenge: Create a suitable design that stands out yet appears to be part of the series (for which it is the 3rd book of 5)

http://www.AmbitionMission.com

Take a look at http://www.AmbitionMission.com for the first two books in the series and what they look like.  I want the third book, which will be to teach business owners how to hire, build, and train a sales team, to embody the look of the series while standing out on its own.  See "what I want" below.

BOOK TITLE IS:

A Guide to BUILDING A SALES TEAM - faster, easier & for greater profit

- I am thinking Yellow with red lettering but am not married to it.  (First book blue, second is green, fifth will be black)
- multi-layered PSD (Photoshop) format - design should be such that it will be easy to increase the "spine size" once final page count is known
- cover design is 6" x 9" front and back plus spine (assume 1/2" for now)
- THIS IS A SALES book so must be exciting, yet professional
- design must communicate professionalism and experience while remaining engaging (exciting)
- audience are business owners, not consumers

- Item 1...