Well, we met with the psychologist last night after a 5-session evaluation, and in a nutshell, he is recommending we pursue an evaluation through the school district.
While he thinks it is too early/dangerous to label him with ADHD he does strongly feel that he has a very difficult time focusing and maintaining his attention for any significant period of time, which could become problematic in a classroom setting. He was very clear that he believes this is a personality trait more than anything, and he stated it could also certainly be genetic. (My husband and his father are very much wired this way). He described him as the type of child who is wound up like a clock that cannot stop. He said because he has no control over this, this is when the behaviors come out.
He said that we should definitely make the teacher aware, so she could channel some of this energy in positive ways (i.e. giving him tasks to do outside of the circle of other kids, etc.)
He also said that while some may disagree, it's not necessarily a bad thing if we don't push the potty training. He stated that we should let the school know this as well and if he has an accident, in his opinion, it's still very normal for 3-4.5 year olds to have accidents. In my son's case, he said because of his inability to sit still/focus it is even more difficult for him to master this task.
He offered us ideas as well to motivate him more around potty training (i.e. peeing on a cheerio) and felt that he is also going to need to be rewarded in small ways for being able to handle himself during the school sessions.
He said it was up to us if we want to wait to submit the request for the evaluation until after school starts, but in his opinion, we should submit it now rather than wait till he begins classes.
I also mentioned my concern of him being in a diverse school district in elementary school, and how this could play out, especially being around other children that may have behavioral issues from stuff at home, not speak English as their first language, etc.(I also am concerned about him not getting the attention he needs as well from a strong teacher because of stuff with other kids). He said for this reason as well he should get services if they feel he qualifies.
I think these were the major points, and he said he does not need to see us/my son again unless something big comes up and we feel the need to set something up.
He recommended an agency which I actually have heard of as one of the best around to work with kids like my son, as well.