It is extremely dangerous to handle live airbags so hire a professional. This is not a do-it-yourself project for untrained amateurs. Even if the battery is disconnected, mishandling the airbag during removal/installation might still trigger it (i.e. stray electrical charge). Accidental airbag deployment could cause serious injury or death.
Your custom replacement steering wheel might be incompatible with the factory airbag, so further complications may arise.
Eye candy: Havana's historic taxis 
My First Car: 
Road trip to Niagara Falls,
MTO’s website lists this table of replacement fees.
Regular licence plate $20.00
Graphic plate $53.90
Personalized plate $99.10
Personalized graphic plate $99.10
Validation sticker $ 7.00
Vehicle permit $10.00
Note that any outstanding amounts registered against the plate owner must be paid before the replacement item is issued (except for validation sticker).