If it’s the Matchbox kit, there is the Great Little Ship range of fittings for detail. For stanchions you can use those made by RB Models in Poland which are turned brass and strong enough for RC use. A generic 3 bladed naval propeller by Raboesch Is good enough, you won’t need a custom prop made. You will need a metal shaft for the rudder.
I wrote a book called “Large Scale Warship Models” recently published by Seaforth Publishing that has a RC installation guide for a single screw model you may find useful, and a listing of major fitting suppliers that you may find helpful for your corvette but other ships as well.
Hope this helps,