well, the 125 frigates will get the Oto 127.... twice the size of the 76, and the same size as the USA one. so that's not an good reason why you should pick that one
look at my other points as well. it looks promising (reminds me of my own first drawings... omg so much changed since then XD) but there is still an long way to go. keep working and improving, and you might find yourself 'there', as kladgsf put it