Dual motor VTOL delivery flying wing

Greetings everyone,

My name is Filip from Croatia and I am in process of developing a dual motor VTOL delivery flying wing. Currently I am still in concept and design phase.

I am new in the field of rc aircraft but I am a fast learner and I have a strong will.

Since I am new in all of this I am planning to keep it as simple as possible. I am gathering advice on whether I should go with vectored thrust or non vectored one, forward sweep (like NASAs Merf) or backwards one? My goal is also to achieve endurance of approximately 1 hour but I would be pleased even if I just achieve normal transitions.

I have tested few models in XFLR5 but am still looking for suggestions.

If you have any suggestions on wing concepts or any questions I asked I will gladly listen to them.

I hope I am in the right place regarding the topic.
I will keep you updated on my project as I progress.

Kind regards,