Add me on Skype (l.parkeshaskell) - and I’ll give you a hand with some fancy magic. UE4 has some good tools and you genuinely do not need to do all the modeling by hand - you can do a fair bit procedurally and in-editor, which will really help you when it comes to making proper levels.
I love this kind of game, so I’m very keen to see something good come of it.
P.S. Since you and Daniel are working on something very similar, have you considered sharing knowledge and pooling your resources into one project :)?