Whats you opinion?
Will the LTC price rise if the lightning network is active?
What other chances has LTC to increase attention?
I suggest you invest btc for long time period. See again their price action history, volume and news speculation. Besides that, btc is the mother of coins, every speculation will giving impact into another coin. Last thing is, bitcoin has the biggest trust as alternative payment or making profit. Leave ltc because isn't worth. Your money your decision and good luck.