Hi Keith
Welcome to the forum.
I love that you wish to finish the boat.
I am helping a mate finish his Aerokits Swordsman and Sea Hornet.
I am building a Sea Hornet from his original plans.
I hope you still have the original plans of the Sea Queen.
I get all my supplies from Hobbyking as are cheap and I have not had a problem with any of their gear.
But 90% of their boat equipment is from the International Warehouse.
If getting all new gear, I would go brushless motor with a couple of Lipo batteries.
These brushless motors are very powerful and would be equal in speed if not faster.
Another few forum sites you may wish to look at are RC Groups, RC Universe and Model Boat Mayhem(you tube has a few clips of Sea Queens).