Yes, Samsung Metro XL does have Bluetooth.
No. This phone do not have wireless FM.
Yes, Charger is included in the standard packing.
You can store up to 1000 contacts in Metro XL. In addition, you can store up to 250 contacts in each of your sim card. So, if you are using 2 sim cards, in total you can store up to 1500 contacts.
You can change the size of the fonts in Metro XL.