mack,
First of all, you're cock is gonna be fine. You have probably just stretched your urethra. A heavy girth session will actually cause me to piss in two streams at once but everything snaps back into place quickly.
As far as time off goes, and this is my opinion based on personal observation, work out as much as you want. The reality of working your cock is that time off will come naturally. The fact is that you are gonna miss a day just because of your personal schedule, whatever it is. For example, you may wake up on a Friday morning and tell yourself that you're gonna jelq for 45 min and stretch for another 30 min as soon as you get home from work...the whistle blows and next thing you know you're at the bar getting hammered! Time off will come.
Another thing is that DLD said that once he took a day off it was easier to take another day off and then another and then another...he really didn't promote planned days off.
Do what you want but your cock is not like your biceps with rest requirements for increased size.