Not sure what my next step should be

CaptainSerious

My situation has been explained in pieces through several different posts, but I'll try to explain it here, as briefly yet completely as I can.  I'm at a point where I believe we have to take action to the next level, but I see several different possible courses of action and don't really know the ramifications of each.  I'm open to advice on how to proceed.

My son, M, was adopted from Peru at the legal age of 7 (he's probably a couple years older than that) in 2010.  He attended private school for 2 years because they were better able to address his ESL needs, and is now attending third grade in public school, at the legal age of 9.  M is dyslexic and currently reading at a Kindergarten-1st grade level.  He also does not understand basic math fact, does not have a concept of time, cannot count money, and has virtually no working memory.

M is currently pulled out for language arts and math in a resource room setting (about 4.5 hours a day), but is mainstreamed for science, social studies, lunch, and specials.  M's IEP calls for a lot of modifications and reteaching, repeating, checking for comprehension, finding different ways to teach difficult concepts, etc. for the time while he is in the mainstream classroom.

Here's the problem:  right now, the classroom only contains one teacher and one paraprofessional, who's supposed to assist M and 6 other kids who all need extra help.  Due to the amount of individualized help M needs, we have always requested (and been denied) that M receives his classroom help from a person that is only assigned to work with him.  Further, it's clear that the teacher and child study team leader do not feel (nor do we) the para can carry out the modifications to M's plan or effectively teach to his abilities.

The special education teacher who works with M in resource room has offered to work with him during science and social studies in the mainstream classroom, and it's worked wonderfully on a trial basis.  The assistant superintendent, however, is intent on either moving the para or the special ed teacher out, which means that whoever stays will have to divide her attention amongst all the students needing extra help.  We are not okay with this.

Now, I know we have to do something, but I'm not sure what.  Should we call an IEP meeting (they did write that assistance would come from a paraprofessional into the IEP, despite our objections, and refused individual in-class support by a special education teacher)?  Should we take our objections to county?  For those of you with knowledge of NJ, what are SPAN and Protection and Advocacy (Disability Rights NJ), and how should they come into play?  Someone here, I think, mentioned we might be entitled to a free advocate from somewhere; how do I look into this?  Is it time to get a consultant/attorney involved?  I'm just looking for the best way to get this all resolved as quickly and cost-effectively as possible while creating the fewest troubles going forward.  What would you do if you were me?