We have a running webshop [url removed, login to view], built in PS 18.104.22.168 and want to upgrade to 1.4 in a stable version (maybe [url removed, login to view], but I would like to hear about your opinion about the most stable 1.4 version). We have several modules running like Attribute Pro Wizard and Cart to Order. The site is in Dutch and English. We are looking for somebody with experience in upgrading 22.214.171.124 to 1.4 and who can do this for sure: In the end the 1.4 version should run smoothly exactly like now with all current features.
If you are able to do this and you have the time, could you give me an estimation of the costs and timeline?