[modric]

I never liked much diversification. If you are in many jobs, you will have many worries. You will also hard be good on all fields. I've never found people who don't know what they are selling as attractive. This applies if we are speaking of some real work. But even in purely financial business, I've found that successful people are on one field mostly.

Other thing is where to invest money you are earning with one job.

I'm an one-job-at-the-time man. Can't stand to work three things simultaneously. So your question is rather personal - what fits to you, what do you want...Peace, money, good work done...