My team looks pretty solid this year but I am uncomfortable with running a man defense. How can I safely transition to zone without risking damage done to my team (losses)?

Thanks.
riceformvp

Play man but put all your practice minutes into zone.  Playing man with your seniors, who already have high IQ's, will hopefully maximizing your wins.  Then the following season you can switch to playing zone, after your incoming freshman have had a year of practice with it.

You can always practice zone but continue to play man. Your assistant coach will email you thinking you've lost it but it's safe to ignore him. Whenever the zone IQ gets high enough for your tastes you can start using it in games then.

agree with those approaches, but understand that you WILL risk losses - because you will not improve in your current scheme

there is no free lunch, you can play for now or you can play for a season or two ahead

You have 8 returning players, so you have some depth with experience but no depth at the LP. Depending on the IQ of your recruits (hopefully you get some with knowledge of both Zone and Man), you should be ok playing man all year. To help boost everyone's IQs a little, I'd devote 5-10 minutes to man IQ and take those minutes from zone and your offense time. 5 will probably be ok to squeeze out a little improvement. I would under no circumstances play zone this year so all the practice time this year is in essence bonus for next season. You still want to put the most defense practice there to help for the future, but preserve some for man this year. If your team is doing poorly by the midway point, just go ahead and drop the man minutes and put it into zone.
Switching o/d is really about a 2.5-3 year process.