Hello again!
In regard to the 150 pound limit, yes, the products would need to be shipped in several boxes. The box packing calculations would come into play here.
You also asked:
This will allow for accurate shipping rates without having to set up shipping zones and classes?
Yes, as long as your packages have dimensions and weight and the plugin is configured correctly in terms of box sizes, then all the calculation is automatic. However, you would still need at least one shipping zone with the UPS method (for instance) added to that zone, so that WooCommerce knows where to look when the customer adds their address (and to take into account using different carriers when shipping internationally, for instance).
If you regularly have big and heavy items to ship, or need to use freight for some items, you can control the split of the package using the extension WooCommerce Advanced Shipping Packages.
Although they don’t have a demo as such, if you want to try the extension, please note we have a 30-day refund policy.
If the product doesn’t work the way you need or you think another product would work better, we are more than happy to offer a full refund. You can read more about our refund policy on our website here: https://woocommerce.com/refund-policy/
I’m going to mark this as resolved, but if you have any further questions, please feel free to start a new thread!