restoration or re-fit

i have bicycles frames old enough to still use 27" wheels. i swore i would never build a 27 inch wheel again. i still like 36 holes in hubs, but i don't like the selection of tires available in 27" diameter. still the question remains, do i build 27 in. wheels or do i build 700 c wheels.

27" tires have an internal bead diameter of 630 mm while a 700C tire has an internal measurement of 622 mm.

the Schwinn le tour II may require a 27 in. rim with a short reach caliper brake and low profile tire. that is sport touring light and fast, but i like to think i'm a randonneur.

update: got the original specs from bikepedia
if this is a '95 then it gets 700c wheels,

will it be totally wrong to have a 27" on a chrome fork up front and a 700c in the rear?, there was a problem with the original fork and headset stack height, newer vs. older styles of headsets, and i have a nice 27" hand built wheel that i like.