Looking ahead to a September retake, regarding prep material

So I feel like an Arrested Development character, saying to myself as the camera zooms in, 'I've made a huge mistake'.

It's not a total disaster but here it is: I've exhausted too much PT material. The worst part is that I didn't even take full PTs a lot of the time. Instead of buying the LG PowerScore Bible, I just drilled the ever living shit out of LG and RC sections on PTs 52-61 (all of them, I know, I'm an idiot) and I'll have taken every PT 62-71 in preparing for next Monday's LSAT. I also have PT 75, 76, 77 on standby, and I have tests 29-38 (old, I know) on standby as well. I haven't purchased 72,73,74, but obviously that is an option. So here's the question:

Since I'm 90% certain I will be re-taking in September, should I preserve tests 75,76,77? or one of the three? Two of the three? That way I will have at least 3-5 recent PTs to study off of before September LSAT? (including 72,73,74) And the older material, AND I still have a chance to use the PowerScore Bibles to give myself an additional boost.

Please don't just reiterate to me the fact that I should have, like any sane forward-thinking person, avoided exhausting the PTs and used the PowerScore bibles / Manhattan prep books. I know, I know, I know. Just please lend some advice as to how I can still prepare well for this June 6 test and not totally screw myself if I do in fact follow through with my plan to retake in Sept.

Also, My last three PTs have been 162, 162, 167. I have seen a steady climb from as low as 148 over the last 2 1/2 months, and only once has my score gone down. So if I get a 170+ (crazy for a person to say who started off upper 140s/lower 150s!) that is the only scenario I see myself not re-taking in September. So i guess if you think that using PTs 75,76,77 has a good shot at putting me over the 170 threshold, that's probably when you want to say 'use those tests'.

Thanks for any input, sorry for the long post.

TLDR: exhausted LG and RC from PTs 52-61, all of PTs 62-71, how many of 72-77 should I use if I want to be able to properly study for a re-take in September?