[Solved] C100 - Court Process

Good Evening,

I am father to a beautiful little 2yr 8mo old girl and have been separated from Mum for over a year now, we are currently going through social services proceedings (We have previously been through the process once already due to DA/DV but I have attended courses/changed behavior and am even willing to continue seeking help as discussed with social) - initially CIN but now progressed to Child Protection after the initial CIN meeting as Mum was not willing to come to an agreement on custody arrangement - Current routine is a shambles as I have tried to tell her for months, social agree with me on this part but due to us not being able to reach an agreement they had no choice but to escalate their involvement.
As a result I advised them that if we could not come to an agreement with 5 different professionals from 4 different agencies, the only other option I had was to apply to the courts for full custody.

I suggested I had sole residency and she saw her Mum 2 weekends per month - Friday AM to Mon PM, drop off on Friday to be in the council offices where social are based and pick up either in the same place or facilitated by a neutral mediator to avoid any conflict or safety issues for any party
Mum suggest she have sole residency where she has her Mon to Fri and I have her every weekend? I actually do currently have her every weekend but I said to social that I feel this is in HER interests to suit her social life and not the interests of the child as she will have a house supplied by the local council and will then have the house to herself each weekend for her boyfriend and friends to come round and do whatever they like in MY DAUGHTERS HOME

For the record, Mum has claimed to be suffering from mental health issues for the last year - Mum also has a cannabis dependency and regularly takes cocaine... I am no saint and have previously used both drugs but know I would pass urine & blood, would likely show in hair sample due to period of time but Mums hair would be like trying to see when shes had a period OFF drugs
These are a few of the points I have made for me having full custody over her

It's also worth noting that I know Mum to be in a new relationship or at least seeing a new guy - He sells Cannabis & Cocaine! Funnily enough, all 3 guys she has seen since we split have been involved in or ARE drug dealers.... feeding her habit in return for something else? Regardless, I don't want this guy around my kid and I firmly believe he already has been, I didn't ask leading questions, instead showed her a picture of the guy and asked if she knew who it was and she was really reserved and seemed scared... I spoke to her about trust and not hiding things and asked her again if she knew who it was, she said the guys name without being guided and told me he was 'in mummys garden'

Mum has also made several comments about her own child in the last year to multiple people, I should have full custody, She doesn't love her like I do, She doesn't make her feel happy the same way she makes me feel - She told a mental health worker she wanted to put her up for adoption for christ sake and told the police she didn't want full custody
She then reverts back on these but surely the damage is done - All it takes is for the child to hear it once, and my little girl is extremely intelligent for her age, I try really hard to educate her to the highest standard - I want her to do well in life and achieve whatever it is she wants to do

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NOW.... How do I go about laying this all out in the court?
I don't want to come across in the wrong way and jeopardise my case
Is there some format to follow?
What points should I include / not include?

I feel social are likely to back me when the court request their report however I am just extremely unsure about the actually court hearing itself

Sorry for the long read... just wanted to give as much background as possible