No, it won't compete with the "trendy widebody ships". However, the real reason I say that is that I just don't think it's worth it. It's bottom access, and would have to be flipped over every time to put batteries in, not to mention the fact that most of the fuse is inaccessible. It would be hard IMO to place the batteries as well as the ESC, not to mention having to be able to put in ducting for cooling. I can't remember if the Sequel has a chin cowl or not, but if it doesn't you'd have to fill the void on the bottom of the fuse between the old firewall location and the new one for the electric motor. You'd likely need longer gear struts to compensate for the much larger prop than the airplane was designed for.

Lastly, would it make weight? The newer airplanes are very much lighter than the older airplanes, which is a reason why fuse volumes have increased.

I would look around, try and find a deal on an older YS 1.20 or 1.40, OS 1.40 RX, or even a Super Tigre 2300 and go fly. You'll get more mileage out of the airplane and come out way cheaper in the end. Hell, a guy gave a friend of mine a Prophecy and he put a Saito 1.80 in it and it has good power for the airplane.

I don't mean to burst your bubble, if you have your heart set on it, by all means go for it and I hope it turns out well for you. Be sure to post some pictures so people can see how you did things!