A 460cc, higher lofted (10.5 to 12*) driver would be a great choice to learn with. To improve consistency, you could have the shaft trimmed. I had a buddy that carries a shortened Cleveland HiBore Monster 10.5*, and he CAN'T miss a fairway. Hits it about 240. The shaft is the length of my 6 iron. If you do something that dramatic, try adding a little lead tape to the head, or you won't be able to feel it.