Definately, get an eval then you can find the proper avenues to help your son. Early intervention is so inportant. My son went through Easter Seals but that only goes through age of 3, then I took him to a private OT, I also had him diagnosed by a developemental Neuro at CHildrens Mem. a peditrician can't do any of this and sometimes they think it is something else or nothig at all. In the mean time to calm the hyper activity down have him do heavy work; help drag the laundry basket, carry teh milk in from grocery store, wieghted blanket, heavy backpack, etc. Before you go somewhere let hm run outside somewhere, the beating of others can be impulse issues ( my son is known for that) my son will misinterpert someone bumping into him for intentionally hitting him and watch out! He has gotten better about it except for with his brother. The erratic sleep pattern can be from being a sensory seeker and cannot self soothe again weighted blankets help with that maybe a different material for bedding. Have a great Sunday and everythig will be ok, get an eval then you will know where to go from there. THere are several books for 'games" to do with SPD kids to help with these issues as well, The Out of CHild has fun is one, I have 101 Games and activities for CHildren with SPD. I don't know what to say about being a seslective mute, my son never stops talking, that is something else he gets into trouble for at school as well. lol SO... I don't know if it is proper advise but it is what has worked for my son and other friends of mine with kids with SPD. Talk to you soon!