Looks good mate. The aerial question depends on the range you want. You could tuck it away inside but you may have to stay quite close to it. Try it next time you're out. Or, you could try making a dummy HF radio antenna mount it on the bar at the front and hide it that way.
And you still need more lights lol
I did quite a bit of research before getting it, it seems a good basic model that is easily upgraded if things break. I should be ok with the painting, I'm not going to do anything fancy on this shell.
Where abouts are you?