Thank you all, I think I have my solution to what electronics I need, this post for me was all about the build, this has been a great help, the Eneloop 4.8v nimh to go with my 5v 8xr Taranis receiver (volt range 4+v) removing the need for an ESC & BEC looks good to me.
I'm no doubt an unusual rc newby as I'm simultaneously learning to fly with a foamy glider at a field with a club / insurance etc whilst building a balsa vintage. I'll also be off to appropriate slopes when I'm ready.
I did mean to put ESC but now understand why BEC would of been more appropriate.