If you need lower gearing, the cheapest, easiest solution is a long-cage rear derailleur and a larger freewheel. 42/32 or 42/34 would give you a decent low gear. Consider going half-step, with something like 47-42 or 46-42 up front and 13-32 in back.
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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