Xacto knife, heat gun / iron, patience, time and enough fingernails to munch on till the glue dries. You'll need .. ummmmmm ... I think it's a 1.5 mm or 2 mm drill bit and thin CA to predrill holes. You'll also need some T pins if the control surfaces haven't already been hinged. If there's not already a tube mounted through the length of the fuse for the antenna, I'd seriously look into installing one. It keeps the antenna away from moving parts in the fuse (control arms and pushrods). Screwdrivers, needlenose pliers, clear or masking tape, some extra covering to seal the aileron, elevator, and rudder hinges.
There will probably be more as the job progresses. That was all I could think of on short notice.
WAIT!!! one more minor little tool ... a tape measure!