“Any one know what the Confederate troop (v. Union) strength was at the close of hostilities?”
This was not the “close of hostilities”. There were several more small battles after the surrender, with the last one in Texas. Areas that did not receive word of the surrender. Here is some triva for you. The South won that last battle in Texas. The Battle of Palmito Ranch may 12-13, 1865.
http://www.qsl.net/w5www/palmito.html
Johnston surrendered to Sherman after Lee surrendered to Grant. The Trans-Mississippi surrendered after that.