OK. So you are not going to bulk age, No problem, But next time make 2 batches and after the final racking let one bulk age for at least six months. Bulk aging has the advantage in that the greater volume of wine is more resistant to fluctuating temperature and it is changes in temperature more than the actual storage temperature that is important. Especially if, like me, you have very limited space and not the ideal temperature.. The wine in a bottle is susceptible to very rapid temperature changes. It does make a difference! Another advantage of bulk aging is that there is a HUGE reduction in the "temptation factor" -- it is too easy to look at your wine rack with a corkscrew in hand --------- and your wine will benefit immensely after a period of aging!
Whatever kit you are using, aging makes a LOT of difference -- longer for reds than white. and bulk aging is best!
So you are going to bottle anyway!
Do be careful when racking off the lees this last time --- it is better to leave half a bottle or so behind than to drag the last dregs out of your old carboy. ( what you leave behind can be siphoned off into another small container or bottle and left to settle for a couple of hours -- and is your first taster -- it might still be a tad murky but still drinkable by the new vintner!).
Once you have added the crushed campden tablets solution and stirred it in to the new carboy you can go on with your bottling