Questions abound . . .

It seems to be that my husband and I are speeding down the road toward divorce. I moved out of the marital home with our 2 children well over one year ago. This may be irrelevant but he asked me to leave because "you (me) have somewhere to go" meaning my Father's house, which is where the kids and I have been living since we left. I'm currently laid-off  from my part-time job (between 10-15 hours per week - it always fluctuated) but I did not file for unemployement. He works full time and earns over 6 times what I made when I was working. He currently pays me $200.00 per month (a figure which he decided was good enough and that amount just started 3 months ago) for child support. And although he is "so broke" just bought himself the truck that he was leasing. He also has a car that he's making payments on and a Harley that he paid for in cash. I'm aware that if we head to court he will likely be ordered to pay between $800-$1000 per month. The kids have lived with me and visit with their father twice a week (2 overnight visits). He did not take my daughter for any type of visit until she turned one year old (Aug. 08). He insists that the kids 'live with him, too' and he is also their 'primary care-giver'. I think he's trying to make a case for himself to pay less child support. I'm home with the kids full-time since I'm not working and his work schedule is erratic. He works a 12 hour shift when he's 'on' and has different days off every week. Never the same days off and never the same amount of days off (sometimes it's 2 days off, sometimes it's 3 days off, sometimes it's 4 days off). What am I up against when we head to court?  Is there anything in this situation that favors keeping the kids with me and the husband receiving the same 2 days for parenting-time visits? What would a judge make of this - it seems to be such a mess and so unstable for our kids. Would a judge look upon me unfavorably because I did not file for unemployment? I've been researching jobs that allow you to work from home (via the internet) and also have contacted a local college about going back to school, I thought it would be prudent to further my education at this point seeing how I will have to be self-supporting in the very near future. If anyone has any scrap of advice or many scraps of advice or has any kind of similar situation that you are dealing with I would surely appreciate your advice/help/thoughts. Thank you so much!