E-Cart 5 Conversion to E-Cart 6

How easy (or difficult) will it be to convert E-Cart 5-developed pages and sites to E-Cart 6? I'm about to start development of a site using E-Cart, and if it''s real difficult I'd rather wait until 6 is released/

there really isn't a conversion.

it would mean recreating functionality, such as recreating the cart display manager, or recreating the checkout pages.

There would be nothing gained by starting with eCart 5 , then moving to eCart 6. The biggest new features of eCart 6 are in the Display manager interface, and the code it generates, and the Checkout wizard interface and code generated for checkout.

Will there a best practices guidelines/tut to redo a site with new 6, so we can integrate the existing database of products, orders, etc?
I am guessing just create a new products buy page, with new interface if existing database can be re-purposed?

yes, the database can be repurposed.

to redo a site with eCart 6, you would really just need to delete the Cart display and checkout pages.

edit the eCart object to recreate it.

then recreate the Cart Display pages and re run the checkout wizard.

Excellent. Thanks Jason.