Yes Michael it will work fine. Keep the radials parallel to the ground
under them and they will be fine.
A suggestion - keep it at 30 feet for simplicity. Make sure it is insulated
where you attach to the house, the more the better.
Now the reason I say keep it at 30 feet is make it easier to build, because
you have an unknown (how much the house is going to detune things). So the
way you make up for this is with some matching at the base or with an
antenna tuner in the shack. Since it will probably be too short because of
the missing 3 feet, you will add some coil at the base which you make
variable until you get the swr to a reasonable level, say around 2:1. Then
just get on the air with it and make contacts. A 30 ft antenna works the
same as a 33 foot one.

Rick