I would recommend using at least handles, and ideally aerobars. You absolutely need to stiffen it so you can put weight on it.
The ideal is probably close to what I have on my touring uni (https://unicyclist.com/t/my-custom-travel-frame/). You can obviously go less hardcore and use a KH T-bar with stiffeners (such as what Martin Charrier has in this video : https://www.youtube.com/watch?v=INMXdgEicaY).
I have never used a beak less saddle, but I would recommend using a stiff saddle, so you don’t get numbing.