If you keep your LST ties on you will be able to develop your scrog based on the shape that you currently have, if you remove your ties then your branches may well start changing position at the same time as you develop your scrog which may make it a bit more difficult to keep on top of.
I think that’s a personal preference thing. You can remove it see how she reacts and always put them back in later if it doesn’t work out how you’d like.