@Adam Widdicombe I do still have a W-2 job yes. I do some work during my lunch and when stuff is slow. I would have a much harder time doing this if I was super busy all 10 hours at work that is for sure. I recommend setting up systems and using them. For example I have a google drive and have a folder for each property with the same subfolders under each folder. I do the same thing with each property so I don't get confused were I put documents and photos. I know that no mater what property it is, the deed is in a certain folder within the property folder and the survey and closing docs are in another. This makes it easy to find stuff and stay organized. I also organize my email and have a folder for each property for the same reason. I suggest using an online system (I use tenantcloud) and do your best to get all your tenants paying online. It will cost you $9 per month but to me it is totally worth it to not have to go to the PO box and pick up checks/money orders.
Your wife getting her RE license might help but I think getting her on board with helping you create the systems and being on the same page with each of them will be more helpful. Then she can help out with the day to day if she needs to when you are at work.