There is also no reason why the suggestions the others and I made cannot be implemented while still maintaining your primary goals for the site. They are just basic/fundamental requirements for a site.
If it is true that you want customers & potential customers to "find what the(sic) require fast." then having every click open a window is counterproductive, since it confuses most users.
I don't think any of us suggested the website be "slick and full of imagery" only that it be orderly and easy to navigate.
I guess my suggestion, based on your response would be to hire a website designer, give them your requirements & goals for the site, and let them solve your problems... they are, after all, professionals like yourselves and would be able to offer you solutions that do not compromise your requirements.