Hi, I will arrive in HK terminal 1 on the 24th March at 15,30 hrs with AY0069 (Finnair)!

Need to transfer to a CZ3951 (China Southern flight) from Shenzhen (SZX) at 20,35 hrs. Would appreciate your advise, what would be the best way of transfer to reach SZX in time? Would Finnair transfer my luggage? Many thanks in advance, Markku.