I can't remember how long you're jogging once you're at w5 of c25k, but if you can jog more than 10 minutes I bet on race day you can do the whole thing non stop... I say this because something similar happened to me, on race day I was so excited and the adrenaline was running so high that I could not stop I just kept going like the energizer bunny

and this race was a 10k

... I'm sure you'll do very well, good luck!