As I have mentioned in the past, bulldog1935 has the right idea -- a smaller outer chainring lets you lower your front derailleur, which in turn will increase the number of suitable candidate front derailleurs.
With 13 teeth in back, I really do not need anything bigger than about 46T in front -- I have 45 on the Peugeot, and 47 on the Capo MC. When the PKN-10 was mine, I installed a 48-45-34 triple with a 13-23 freewheel and the original road double front derailleur, all without any issues. My son insisted on a taller top gear, so I regeared it 52-45-34, which still works extremely well.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069