I would recommend 3 day split only because of your time restraints. You can add an extra workout if you have time, but if you do the 3 day, you will be able to make sure you get to the gym. It takes about 45 min to complete a workout if you are pushing it. It is relentless and it allows you to adjust poundages. The only problem with it is boredom doing the same stuff, but if you watch the weights climb during the wave and push the last set you do past the amount you are supposed to get, it is fun, doesn't take much time, allows for muscle gain as well as strength.
That sounds good. I think i can manage 3x a week. The problem is my work schedule is already so early in the morning. 4AM fri, mon, tues. 6AM sat + sun.