Late to this party, but #1, I am EXTREMELY HAPPY to see guys excited about training here in Hawaii and doing a lot of mental push-ups in regards to their strengths and more importantly weaknesses and wanting to explore options. I also appreciate guys "trusting", but wanting to "verify" information first hand. Warms my heart!
As for ambi, I have always been fortunate to be reasonably ambi throughout my life in most sports, like baseball, soccer, golf, and shooting. I have been a long time proponent of becoming more efficient with the support side, despite the old school dogma of "consistency of platform," and to "train for higher percentages." While I generally agree, I am a bit more open-minded, and my answer has always been if you have the time to train more skills to proficiency the better off you are. If time and resources are limited stick to the basics until you can pull them off in your sleep. If you have the ability, mastering more skills increases your efficacy.