You've obviously spent a lot of time on this post but actually the elaborate nature of it makes it really quite difficult to absorb, a simple format is much easier for us!
Also, I think you're coming at this from the wrong angle.You should start thinking of the application in terms of the three main requirements. Relationship, financial and accommodation.
The financial requirements here. You need to read and understand fully the category which you will be using.
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/826340/Appendix-FM-1-7-Financial-Requirement-ext_1.pdfFormatting of the requirements here.
https://www.gov.uk/guidance/immigration-rules/immigration-rules-appendix-fm-se-family-members-specified-evidenceFinancial Requirement.
Depending on your exact situation, you'll need to provide a full 6 or 12 months worth of pay slips and the corresponding bank statements. Most people include an extra months worth to make sure they have the correct amount of overlap.
A letter from the employer, see FM-SE (linked above) for the mandatory information it must contain. Optional, P60 and employment contract.
Just use the sponsors employment details.
Accommodation Requirement.
What you need to provide for the accommodation evidence depends on your situation. Do you rent, own own or live with family? If you rent, you'll need a tenancy agreement in both names or in your name with a letter of permission from the owner for your wife.
If you own, you'll need the land registry document and a recent mortgage statement.
If you live with family, you'll need their land registry and mortgage statement and a letter of permission.
I believe they ask for a council tax bill too but this is usually going to be part of the correspondence evidence in any case.
Relationship Requirement.
Your marriage certificate. Proof of divorce if applicable. Items of mail you will need 6 joint, 12 individual or a combination of both. I know we talked about this in an earlier thread. Now you have been living together longer, you will be expected to have the full number of items.
I think you also need to include evidence that she's been fulfilling the requirements of her student visa. Others can help you with this.
Why don't you compose a list of evidence that you'll be including as a starting point and we'll help you add to it if there is anything you are missing.