No, passport will be fine. You 'might'. need a friend to with cedula to back you when getting the lecy hooked up, but not always. Cable/internet/phone = passport is fine.
you won't get finance until you have cedula but pretty much everything else is fine with passport.
I say no financing but lots of shops will sell you furniture and appliances if you can provide a contract and friend with cedula to vouch for you.