This is quite a problem to solve, but just doing without greeking text won’t fix it. Using test items of real content and data in designs will help, but there’s no guarantee that every oddity will be found and corrected. Do you want to be sure? Then a prototype or beta site with real content published from the real CMS is needed—but you’re not going that far until you go through an initial design cycle.
Lorem Ipsum actually is usefull in the design stage as it focuses our attention on places where the content is a dynamic block coming from the CMS (unlike static content elements that will always stay the same.)
Feed efficiency comes into focus
You begin with a text, you sculpt information, you chisel away what’s not needed, you come to the point, make things clear, add value, you’re a content person, you like words. Design is no afterthought, far from it, but it comes in a deserved second. Anyway, you still use Lorem Ipsum and rightly so, as it will always have a place in the web workers toolbox, as things happen, not always the way you like it, not always in the preferred order. Even if your less into design and more into content strategy you may find some redeeming value with, wait for it, dummy copy, no less.
More refined results
You made all the required mock ups for commissioned layout, got all the approvals, built a tested code base or had them built, you decided on a content management system, got a license for it or adapted open source software for your client’s needs. Then the question arises: where’s the content? Not there yet? That’s not so bad, there’s dummy copy to the rescue. But worse, what if the fish doesn’t fit in the can, the foot’s to big for the boot? Or to small? To short sentences, to many headings, images too large for the proposed design, or too small, or they fit in but it looks iffy for reasons the folks in the meeting can’t quite tell right now, but they’re unhappy, somehow. A client that’s unhappy for a reason is a problem, a client that’s unhappy though he or her can’t quite put a finger on it is worse.