Do I take the # 4 or 2 train to 149th st and walk over, is this correct?

You can take both the 4 or the 2 or the 5 to 149th and the concourse

The 5 or the 2

Yes either train will get you there and you just walk down the street.

The 2 train.

Yes it's correct Bjs Wholesale is located at Bronx terminal mall

You could just take the 4 and after wait for the bx13

4 train and walk or bus no 2 train. I did myself a favor and got a Costco card way easier 2 get 2 and no 30 min lines and better stuff