DD is 6 and her father and I have been separatedfor several years. He was abusive to me and I fear the way he treats DD equates to emotional abuse too, but obviously it's difficult to prove. He currently has eow weekend contact but is looking to extend this to 3 night's instead of one eow plus half of school holidays. While the 3 nights eow would actually be better for me, as it means I'd very rarely see him (he is still verbally/emotionally abusive where possible) I feel like I'd be letting DD down if I just let him have his way.
Some examples of his behaviour include telling DD she could attend parties/dance classes/sports events then once she was excited, I'd paid for things etc he'd change his mind. He told her she's like an elephant anyway, so no point attending dance classes. He let her practice for the sporting event for months, only to tell her on the day he didn't feel like taking her.
I have a rule that if one DC wakes up they play quietly until the other DC are up, rather than running round waking everyone. He said she can wake him whenever she likes, because he puts her first, and isn't too busy with other children for her 
He frequently asks her if she's seen my parents, despite knowing we're no contact and have been for many years. This is to prompt her to ask me questions about them that I might find difficult/to resent me for not providing her with GPs.
He tells her to keep everything that happens during contact a secret.
He lets her eat whatever she wants, often resulting in an upset stomach for days after contact.
He lets her watch inappropriate films which give her nightmares.
He leaves her unsupervised with his GFs 12 yr old brother and his friends. She's accidentally mentioned making fires with lighters with them, the 12 yr old sharing her room (possibly bed) and has repeatedly inappropriate language which suggests they're talking about inappropriate things around her.
He tells her he wants to see her all the time, but makes no effort to actually arrange additional contact therefore leaving me in the difficult position of her asking does he ask to see/phone me? Why don't you let him?
I could go on and on but generally would appreciate some outside perspective. Am I being overprotective because I know how he treated me? Should I resign myself to the fact that what he's asking for is standard contact and he'll probably get it, therefore there's no point fighting it? Or do I go with my gut instinct and keep contact as it is and only allow more if that's what the court decides after looking into things?