I was in the same situation as you.
Do you have any idea if science is going to be the make it or break it for you?
Personally when I took the Teas V I hadn't taken Biology Chemistry or Physics in about 4 years. Anything above 70 in my opinion is good 80 seals the deal, and 90 is just impressive.
Ofcourse in order to get up there you will need to score good in each section.
My tips for you are to study your weaknesses, since you bought the ATI Online Assessment it will tell you where most of your mistakes were. I didn't purchase the assessments, but I read that a lot of people found them useful.
Here are my tips
English is fairly easy, since we were in the 1st grade we have been learning how to use the English language up until college, so it doesn't need much studying. My advice study your terms the stuff you know but you don't know the formal term for it aka: Coordinate Conjuctions( and but ....etc) Sub conjunctions (BECAUSE..ETC) Subject Verb Agreement( If you say THEY WERE your verb has to be plural as well).
Reading: As well will not need much studying if you have been studying english and are a good reader. I'm assuming you are a good reader so this does not need much studying as well, just familiarize yourself with the questions on the practice test and you will do fine. Read slowly because the questions can get really tricky. Also know how to identify first person(I), second person(YOU), and third(Narration). I'm sure you can read yellowbook pages and read a map but they are on the test so familiarize yourself!!!
Math: Again just try to do all the practice problems on the math section in the ATI Book, when you can't figure one problem out look at the examples. No need to read something you already know how to do. Everything you will see on the Practice questions, Practice test are on the test. If you know everything spend your time on building up your speed. Math is the only test I ran out of time on. Speed is essential in math, lots of addition subtraction PROBLEMS.
Science: The only test I spend almost the whole week studying for (I had 1 week to study as well) and it's the worst score on my Teas V. (I got a 70%) The science portion is really harder than what you learn in the ATI book. If you study your ATI Guide you can achieve a 70 by far, but if you want to get into the 90th percentile or even 80th you will need to look for outside sources. Some of the questions got way more in depth than what was taught in the book. If this is your weak area study this portion the most, make flash cards and try to get as much into your head as possible. Everything in the book will be in the test.
Finally my last ADVICE
Don't freak out if you don't do good in the Science section. Compared to science the reading,math, and english sections are a breeze just be careful because they get really specific on what they want and will try to trick you in little ways. Use Math, English and Reading to bring your score up to the top.
If you work 2 jobs make flash cards and study during break, test yourself as much as possible after reviewing all the info so it sticks in your head and you understand it. You only have 1 week to study I cannot guarentee you will get a 100, but if you put the effort and study you will get a decent score.
I hope i have helped in anyway possible I was in the same situation as you and when I finished my test and saw my score, I cheered and clapped in the testing room in joy of happiness that I had passed my test and could finally approach the last and final step in getting into my program. THE INTERVIEW.
Let me know if you need anymore info
AND GOOD LUCK.