Rock49 - As the saying goes, it's your truck, so your choice on how you build it. We all have our preferences, but it's up to you what you go with.
Here's a "Legacy Tech Tip" on
Installing an IFS (Independent Front Suspension) as food for thought. It is based on a '41 truck, but basically similar to your '56 in design/process. I'll note that there are ton of newer designed IFS kits currently available as both weld in and even some bolt in applications. There is also the idea of doing a frame clip, like described in this other "Legacy Tech Tip"
Installing a Camaro Clip that is also good food for thought.
Others that have changed over their solid axles to IFS will come along and hopefully share their experience and wisdom soon.
