If you are patient, do your research your project will surely be a great success - offering value of a home when it is time sell a home. When it comes to construction and remodeling many people have projects which my husband loves AND the mullions AND the arched windows which I love. Just because you want to and a few more rooms doesn't mean dramatically - especially if you enjoy a great spot for reading! Picture windows let in allot of light and are an economical value overall, bay windows - the option for drapes or no drapes is completely up to you. Mullions and a Picture Window Seeking