Is this enough proof: Unmarried Partner Visa (outside uk)

Hello!
I'm from Poland, my boyfriend is from the UK and we have started the process of applying for an Unmarried Partner Visa.
We've been together for 2.5 years, but have never lived together (I can't work and live in the UK on tourist visa). I'm flying to see him every month, I stay for a week or longer, he flies to Poland a few times a year as well.
I wanted to ask the community here, if you think the list of documents my partner and I have so far is enough, or should we add something more?

1. Our passports.
2. Relationship Timeline & Overview - I have split each year into months, noting who flew where during that time with boarding passes, added screenshots from discord/whatsapp of our calls from when we are apart and a picture of us from that time (screenshot from gallery with the date visible & I wrote down the place where we were). Each year has a short paragraph written at the start about what happened that year, any milestones or travels.
3. Financial Requirement:
   - Pay slips from the last 6 months from my boyfriend's work,
   - A letter from his HR confirming his pay, contract, employment type.
   - We will add bank transfers as well, for those 6 months.
4. Evidence of money transfers between us.
5. Adequate Accommodation:
   - A statement from us explaining why we are unable to live together (tourist visa), saying that we have made efforts to go for skilled worker visa, but my work experience is not enough to earn a salary that's required.
   - A letter from my boyfriend's dad, who owns the house my boyfriend lives in. Stating that he is allowing me to move in, describing the property, describing us as a couple, confirming that we have met in person multiple times.
6. My English Language Certificate.
7. A letter from our friends from the UK (a couple).
8. A Cover Letter from us.

I have a lot of anxiety, the visa fee is very expensive and I want to make sure we are doing everything we can to be successful. So if there's anything you think we should add or change, PLEASE! let a girl know! Any tips welcome!!!