Selmer-esque scratch build

[Shawnobi]

Hi All,
Finally started my build which initially started out as an old Selmer TV 18 restoration. Now only the the choke and O/P tranny remain!

I'm after some advice on layout as this is my first build Could people please comment on it in a bid to get it as good as I can before I commit to making holes?
Pic should be attached. Thanks in advance