Strength isn't the thing you need to worry about if you soak balsa with CA like that. Weight is going to be your problem. That wood is going to wind up being very heavy with that much CA on it. If it were me I'd put together an order to Balsa USA or Lonestar Balsa and get the correct wood for the job. Spruce and Bassword are used because they are strong woods and still relatively lightweight.

Ken</p>