It is better to spread out your investment specially in crypto, there are other great alt coin out there not just Tron.
Always remember to never put all your eggs in one basket, try to have other option or back up in case something went wrong with your current investment.
It's very true that in cryptocurrency market we should not put all our eggs in one basket, it's better to diversify our investment into different trusted projects, so that at anytime atleast one of them will be experiencing price pump, again you don't know when a coin can hit rock bottom and remain there, so it's not safe to invest only one crypto coin, except Bitcoin.
Personal if I must invest in only one crypto coin, then it must be Bitcoin, because it's the most trusted and reputable among every cryptocurrency in the market, and every knowledgeable person in the crypto space knows that. I however wish the OP best of luck in choosing only Tron, for his crypto investment.