Maternity Notice Letter for Work

This is my first time writing a maternity leave letter for an employer and in my province it is required to give 6 weeks notice before the date you intend to start your leave and 4 weeks confirmation of your return date or your employer is not required to hold your position for you. I'm not entirely sure I WILL be returning at the end of my leave as our hope is to move closer to family and we would like it if I could continue as a SAHM. However, until I know for sure that we will be able to sell our house and move or that we will be able to support ourselves on my husbands income alone when my maternity leave benefits run out - I don't want to close that door, as I very well could end up returning.

I wanted to know how you ladies thought this sounded... If I am maybe leading them on too much or if stating I will give the legally required 4 weeks notice confirming my return or notifying of any changes in circumstances is enough? After all, I'm not psychic and have no idea what our lives will look like 1 year down the road.

Here is the letter I have written so far:

Dear (Human Resources Manager),

As you well know from our discussion on June 17th, I am pregnant and the baby is due on November 25th, 2016. This letter is to inform you that I wish to take maternity leave starting November 14th, 2016.

It is my intention to take both 15 weeks of maternity leave and 37 weeks parental leave for a total of 52 weeks. My anticipated return to my position at (company name) would be November 13th, 2017. As is required by the Employment Standards Code, I will be providing at least 4 weeks written notice confirming my intentions to return on the date I have provided you or, should any unforeseeable circumstances arise, an update in regards to any changes in the status or timing of my return.

Please, feel free to contact me with any further questions on the matter or if you need any formal medical documentation from my doctor.

Sincerely,

(Name)