Regarding 190 visa Invites after recent changes?

Hello Mr Anil Gupta…please can you tell me what should I do?? current scenario is I am having 80 points ANZCO code 254415 Registered Nurse (Critical Care and Emergency) DOE is 4th october 2019 for 190 Victoria and I am currently onshore in Melbourne on visitor visa and this is my last entry and my visa is expiring on 8th of feb 2020…my agent advised me to go for 491 Tasmania infact already applied for that on 26 Jan 2020 …what should I do…should I wait for 190 invite and go back home or should I take whatever I am getting first(491) ?? Anyone here with same case…please do reply.