What are science-based methods to memorize large sets of best practices?
We, as human beings, are generally not able to MEMORIZE that quantity of information. I suggest there are two ways to approach this issue:

1) Remembering WHERE information is as opposed to what information there is.
This works with top-notch scientists and I am particularly fond of this strategy. For example, instead of remembering the parts of the neuron, you could remember where you wrote them down or how you can quickly find those out and you can refer back to those. Or, in your example, instead of remembering what you have to describe, you could remember where your checklist or notes are regarding that and just look it up every time. Now, all you have to remember is that only certain information goes into the description and where you can look that up. (similar to chunking as mentioned by one of the previous replies)

2) Experience -> Incorporating that much information can be done easily only if you have deliberately practised it A LOT. The more information there is, the more practice you need. By the sounds of it - you may need a lot if there are so many rules. I would assume, much like the scientific work I am involved it, at one point it will become second nature to you and you will feel when something is not described or written well. 

I realize that these two points do not address your question directly: Generally if you want to remember a long list of items it all boils down to the strength of the connections you build. Build your own associations. In one incredible study, for example, an undergraduate long-distance runner managed to increase his memory span from 7 (which is the average) to 79 digits (in some cases this could also be chunks which can increase the amount of remembered information) after 230 hours of deliberate practice (1h a day 3-5 days/week). He did that by "recoding" long strings of numbers into associations - e.g. 3492 -> 3 minutes 49.2 seconds near world record mile time; 1944 -> near WWII end and so on (Ericsson, Chase &amp; Faloon, 1980). 

So, it is possible to remember that amount of information but I strongly discourage you to do so as it would limit the amount of creative work you can accomplish in the meantime.

P.S. Just as an example of how effective 2) is -> In order for me to recall that study I remember that a lot of hours of deliberate practice increase working memory recall span and I remembered that there was a case study. Then in order to remember exactly what the study was, I recalled where it must be (Somewhere in my Memory-related notes) and so that I can sort through them quickly I recalled that there was something with WWII and recoding strategies. I managed to find it within 30-45 seconds among A LOT of notes!

Hope that helps.