most html wysiwyg editors still create a mess of tables for design and placing purposes, which has mostly disadvandtages: massively increased file size, unhandy structuring, dependance on a certain font type and/or size to keep the layout, no barrier-free design and most probably extensive use of inline css, which makes it really hard to change things afterwards easily.

if you really want to save time, i'd recommend to write a nice skin for one of the open source CMS out there, my fav is websitebaker, because it only needs a single php page (with placeholders) as template skin, is rather small (~700kb) and easy to edit. or take something smaller, like easycms. i'd not start with the heavy weights joomla or typo3 right away.