Okay, got a little time, so I'll reply:
Just to clarify the hanger dimensions... are you specifying length-height width or length-width-height?
Length width height. Also bear in mind that the use of 5"/38 guns on Brooke and Garcia class was also as result of economy. The Gaarcia/Brooke were 414ft long as opposed to the Knox class which were 438ft long. The extra length gave the Knox the Mk.42 gun (only one but more than enough - the Mk.42 was superior to the 5"/38 in term of fire-rate).
Thank you Kim for the crest
"Never fear to try on something new. Remember that the Titanic was built by professionals, and the Ark by an amateur"