Greetings and welcome to the site, also wish your daughter the best. Cancer is a MF, excuse my french, but i have a soft spot for this. I have helped cancer patients in the past both on death bed as well as ones that were in remission like her.
I see that this is your first grow and id love to help if you dont mind. Seems that you have more than you need to get started. One thing that i will remind you is that the site can get quite intoxicating. You will see lots of grows as well as massive yields, but you have to remember these are the results of many trials and errors some over months, and may over the years to get the results that you will see here. Dont let this discourage you, at first most have to crawl before they can walk. then there are those who come out running and it does not always make sense but it just seems to happen.
First i will tell you that the setup that you have will help you learn and get started. The tent is a great size, the lights will be more than enough i am sure. I will tell you that heat extraction is a must. I have one of the LED 700w from Mars and the temps do rise in my male tent. So i need to get a way to extract that soon. i know that you said that you didnt have a scrubber and that is also something that is important to your safety. Do not skimp on that item and to start you should be fine but down the road you will need it.
The soil that you have is good stuff i am using it right now and i am really, really please with it. You can follow along if you like.
https://www.autoflower.org/threads/white-jem-f7-black-dragon-f2-black-leaf.48705/
As far as liquid ferts go i am using the
line of grow big and tiger bloom. They are tried and true ferts and i swear buy them. they are simple to use and have great results. Any questions you have about them i can assist. As far as the LST i would say lets get your first grow out of the way and then move to the advanced stuff. autos are temperamental so we should focus on getting a successful first run and then take it from there.