Run? Probably one. Help advise and the like? Maybe a couple others. You aren't really hedging your bets as much as you are dividing your efforts. Note, if you

Run? Probably one. Help advise and the like? Maybe a couple others. You aren't really hedging your bets as much as you are dividing your efforts. Note, if you can get something started, (possibly also funded,) and operating largely without your intercession, then iterating on that model quickly can be completely awesome. But get something going first and don't try twelve things simultaneously - been burned by that one myself.