Replace bermuda with St Augustine sod
I live in DFW area, i have bermuda grass, my back yard is doing fine and no weeds :), but my front yard is the opposite, it has lots of weeds, the reason for that is a few years back i spread couple of yards of top soil because my yard slopes downwards and sinks a little bit because of the instability of soil in my area and top soil that i used was of bad quality which had weed seeds i guess. Anyways this year i am trying to do the following
1. Remove the existing grass and till the yard
2. spread nice quality top soil/compost mix
3. apply alfalfa fertilizer
4. Install st augustine sod.
Please tell me if these steps are correct, is there anything i am missing?, oh and the main thing is, is this the correct time to do all these? or do i have to wait for couple of weeks. also is SA the correct choice of sod. I have attached few pictures of my front yard.
Thanks for the help