I want you to come my homeover this weekend, because we have a lot of work to do on our project.

or "come to my house this weekend"

I decided to make a lot of changes on our project, so I decided to have you come to help me.

I also decided that we should change our meeting place, because I thought we would need another one for more productivity.

Is there a physical location that will change, or is the project being rearranged?
You may be able to shorten this sentence with "because I think it will boost our productivity."

Hi, Ali.,

If this is a letter or email, no need for the period at the end.

I want you to come to my home this weekend, because we have a lot of work to do on our project.

I decided to make a lot of changes on our project, so I decidedneed you to come to help me.

I also decided that we should change our place, because I thought we need aneach other one forto be more productivitye.

Your best friend:,