No need for the 3 pay stubs but would include a letter from your employer confirming that you are currently employed and your yearly salary amount. If your company has an HR department they should be able to get you a letter easily. Your wife should be applying for an SOWP is she is planning on remaining in Canada for the duration of your WP. Depending on the date of your daughter’s birthday she may be eligible yo start junior kindergarten either next year or the year after. If she qualifies for next year I would apply for a study permit. If she only qualifies in 2 years I would only apply for a TRV.