Will it work

So I bought my son a used 2000 Lexus
Rx300 and within a month his brakes
needed repaired the front  passenger side
caliper went bad so he went to The auto
parts store and purchased a new caliper
front rotors and front and rear pads. And I
was on my way to do a brake job for him I
started with the front passenger side
because that's where I knew I would spend
the most time everything went well I
replaced the caliper, rotor and pads we
bled the brakes and then I moved over to
the drivers side I replaced the rotor and
mounted the bracket for the original caliper
and when I put the pads on I noticed that
the pads were hanging over the rotor after
scratching my head and a trip back up to
the auto parts store I discovered that I had
put an SE300 caliper and rotor on the
passengers side now my question is do I
leave it or do I need to replace it all with
the Rx300 caliper and rotor it all bolted up
and worked just fine I now have Rx300
rotor and caliper on drivers side and Se300
caliper and rotor on passenger side the
rotor is 1/4" smaller. I know it works but is
it dangerous and will it fail?