First of all, the facilities of Fu Jia Store are relatively good. If you go to Wedeworth, you are right to choose Fu Jia Store.
Secondly, the price of 599 for two months is slightly more expensive. You can look for the transferred fitness card on the ticketing website in Dalian, which can be cheaper.
If you only have two months, I suggest you go every day. If you go every day for two months and control your diet a little, you will probably lose 15 kg. Four times a week actually won't lose much weight.
Of all the courses, I think pedal is the most active. The spinning bike in the machine is also good.
I wish you success!