Tezos is a good pick but you shouldn't have the mentality of "I need to invest in three more projects, so I'll invest in three projects", what if there aren't any three good projects out there? What if there is only one good projects and the rest are bad projects, will you still invest in three projects? What if there are six good projects out there, will you still invest in only three? The point is that you should invest in something once you found something good, if you have set in your head that you'll invest in three projects, then you'll find three that might not necessarily be good one's. It would be prefered to invest a lot of money in one good project than invest in three mediocre one's.