I'm with you in that I don't like the look of that nose at all. Just doesn't look right.
Here are some suggestions that I would do if this were my plane. And I know after all of your work, you don't want to hear this, but... Put the plane back as it was. Triple stack the fuse like you had it and put the motor back in teh rear of the wing. If you need nose weight, then put those massive batteries right there in the nose. You can extend the nose a hair if you need to push the weight further forward. Think about it, Those batteries are going to weight more than the tail section and the motor combined. So, you can use the batteries to set the CoG.
The reason I say to go back to the triple stack design like you had is it will add stability to the plane. Right now, that plane reminds me of a pylon racer with the wing that low. Or like a standard glider. However, a standard glider is made to slice through the air, and they can get going pretty fast because of their design. With this plane, you are wanting flight stability and not something that is just stupid fast. Think "Cessna" or "Ikon A5" here. High wing on both, both made for stability and easy flying. The Ikon A5 though is a pusher and made to land on water. anyway, just think of the design.
I know you can get enough of the battery weight up to the nose to do what you are wanting. I would try to put the batteries as LOW as you can get them with the wing as HIGH as you can get it. This will be like hanging a plant from a basket hanger. Think about it. If you were to just run teh dowel rods through teh center of the pot and hang it that way, it would want to tip over. But, if you put the hook farther ABOVE the pot, the pot is going to hand down and it's going to stay there. VERY hard to flip it over, but I"m sure you are not wanting to do stunts with this thing. Hell, just the weight of the plane and the size of the wing won't allow you to do that because of the force that would be on the wing.
Okay, now that I have said that, lets talk about wing mounting. You already know my ideas of wing stability. It's again, like the Cessna. You are going to need supports. Again, you will have to raise the wing up for this to be effective. The closer you can get the wires to 45º to the wing, the stronger it's going to be. However, 25º-30º will work as well, or is it 60º-65º..., either way, I think you understand what I mean. It's like a tent poll and your runners coming off of it. If you have them close to the same angle as the poll, it won't take much to break them or have a failure. but if you can push them out even further and make more of an angle, it will be more sturdy.
to mount the wing, I would use bolts. No rubber bands, only bolts. Nylon 1/2" bolts can work to save weight. I would use no less than 4, suggested 6. For this you will have to redo the fuse, but not as drastic as you have done it in the video. You will have to add to the side of the fuse so the wing has more of a base to sit on. I would do a full tube like you have now on yoru fuse for the top section, but then do a triangle for the center section and leave the single section at the bottom. This will add a lot of needed strength to the plane. It will look good depending on how you do it, and if you leave it somewhat open, will not restrict the air flow much at all.
I think that is it lol. If I think of more, I will update. Sorry for the 3+ hour delay in watching it, read my blog to find out what I was doing over that 3+ hours...