I thought i would let way answer first, as you asked him.
this base idea that you have is almost exactly what i had in mind, though with some more features.
im not sure how you could get the lightning rod to extend unless you had it place them and a frame and move it up one by one, though i would just go nuclear and skip that as it only generates a little power comparatively. mobile base is exactly what i want, though frames are limited in how many you can move at once, so i would have it in multiple sections and have it modular so you could rearrange it at any time. cross dimensional travel is a hard thing, i would have ether 1, a builder plan of it and place it in a different world or just have multiple ships, with one main one and a mystcraft book/portal in each, though moving might be an issue with that.
thanks, i acctually got my quote from a percy jackson book.
edit, portals! i totally forgot about that.