If everything is done correctly, you should only have to delay the first bite on 10 man in order to avoid the timing issue with the second air phase. While you could delay the second bite as well to give you even more time it isn't really necessary if your first person bitten waits until around 3 seconds remaining on their debuff before biting again. You encounter a similar timing issue with the first air phase of 25 man encounter which is also largely resolved by delaying the first bite.
"In anything, if you want to go from just a beginner to a pro, you need a montage." /w TankSpot WTB Montage for Raiders.