There's
a reason for the 10-post minimum....it's to keep spam-bots from posting spam links with a single registration and post.
Also, if you went to the Newbies forum first....you would see that there is a "Get Your 10 Post" thread just for this purpose, so you don't have to create a whole new thread to get 10 posts.

And....you're questions would probably be better served in the Newbies section anyway.
That said...
From the short video clip....all I can say is:
Get your daughters (I assume they are your daughters) into a decent
studio or at least with someone who's done some recording and has more than one mic and single interface....because that little girl can sing, and the other one plays great,
IOW....you guys might get more mileage if you could just focus on your performances, and let someone else deal with the technical recording issues of making it sound good.
Of course, if you are determined to do it all yourself with the gear you have....what kind of specific help/questions are you looking for?
Overall it's not bad for a home/YouTube video kind of thing....but you need to get the level balanced better between the singing and instruments, and when she really belts it out, I'm hearing some distortion (she could tone it down a tad, as it does sound a bit forced in spots)....but you have the basic ingredients AFA the talent goes, so you just need to improve on the recording technique if you want to do it with a single mic and "live" as a group.