Earlier quoted context omitted.
Thanks alot for the comments and RoR suggestion. I am not sure I totally understand the second piece of the post. Are you stating that we will have to spend $$$ now transitioning to a new framework or were you saying that we would have to transition to a new framework before the big sale?
the latter: transition to new framework before big sale.
Thanks for the feedback everyone! Your wisdom is truly appreciated. We had a discussion with our developer and gave him the opportunity to choose except for GPL frameworks.