Linda, As you probably guessed by now, it's easier to add space than take it away without making a mess for the next revision. So I find it easier to go long, which may mean extra pages and more white space (the price of print). When tweaking styles, I always start with the larger text and work my way down to paras, notes and tables.
Finally, I've used Quite Imposing for years (used to layout signatures with tumbled boxes on one big page-ugh!). Once the software is installed, the imposition takes (at most) a minute and you're done! Often, the printer will do the impositions. But having the program (around $300) means that I don't encounter possible platform/font issues when sending native files to the printer for imposition. It also lets me know, just about any time, where I am with the layout. Mollye Barrett ClearPath, LLC 414-331-1378