Advice...feedback needed

Hi everyone!
So, here's the sordid deal. I am going to be pursuing child support, the ability to claim our 18 month old as a dependant again for this year(i claimed him for last year, and we agreed that it would be every other after that)and have our court order changed from joint legal, and physical custody(this was put in place last nov. while we were still together, and living together) to joint legal custody with primary placement with myself.

Here's where it gets tricky. I have zero money for an atty. I can do these things simply by filling out paperwork, and petitioning the court myself. He, on the other hand has his ow/ngf who is a millionaire. I am terrified that once he sees the paperwork for child support he is going to flip out(for SURE), AND counter file for at least 50/50. He does get him, but I have sooooo many things documented on how his priorities do NOT jive with being a father who's son doesn't live with him.

I do NOT talk to him about his activities....but he does ONCE IN A WHILE offer things up like, when he 'can't' take Colin on a day he is supposed to have him. I just simply document away. I do know for a fact that he has flown to Nashville with her(we live in Wisconsin)...and stayed in a hotel for a long weekend...missing one day of work, which I am sure was paid....as she is his boss, and the owner of the company he works for. Now, for a guy who is so broke, and can't afford, nor does he think he should ever have to pay CS.....he sure does a lot on his free time(and when he is supposed to have Colin).

Here's the dilemma....I do NOT want to walk into court with a rubber knife...when it's a gun fight. I have the information that I do...which is good...but may not be good enough to determine that prior to this, his priorities, and activities do NOT mirror a devoted father who should get 50/50. So, I was thinking quite strongly about approaching her husband(they are going through a divorce) and seeing if he can offer anymore insight into other activities/dates that's he's aware of that could help me out with the facts. This would be taking a big chance, as I'd want it to remain confidential....and if Jeremy found out, he would FLIP OUT BIG TIME. I would be psycho, a stalker, etc.

I know about triangulation....and that is NOT what I want. I spoke to his ex-wife in Jan. before moving out, and have NOT since. I have nothing, or as very little to do with ANYONE he is associated with. It's better for me...and keeps me moving in a fwd. direction. This court stuff, is the last step to getting everything in writing, and only having to deal with him per the court order.

I do not know the dynamics of her, and her soon to be ex's relationship, but based on what I have read on the court website, the divorce seems to be getting heated.

I need as many facts as I can get. If I had an atty...they would possibly contact him for information...but I can't afford one.