hey let me see if i can give some help here. first of all YOU NEED NOT WORRY becasue of the new law passed in september were they give temporary residency and you have to leave with your spouse for two years is a safe net, so if its for convenience they have everything covered, second of all the worst that can happen is an interview and trust me he will get one cause he have alot of red flags on his file but none the less he will be treated like everyone else.
next thing is do not allow any lawyer handle you application get yourself a councellor it cheaper and lawyers are only if you need an apeal. get a councellor and when you sending your application put everything in it, everything you can get that involves the two of yourll, especailly the baby, and alos include the ARC and it would be good if you pay for it one time in the form of a bank draft or money order just so that the process wouldnt take to long casue a ARC TAKES two month to process, as the process goes along make sure you skype him back home. get yourself magic jack so you can cal him often, send him some money and keep the western union, also use whatsapp to text him and after a few month take all those records and prepare yourself a STRENGTHENING FILE maybe have your councellor do it for u and send it to them.
last but not least its gonna be a long wait i dont know what country you in but join the forum of your country for more support i hope this helps