On a hybrid, not a racing rig, you'll be fine with close enough. Even for most of us with high-end road bikes it's close enough. There is a lot of contention and back-forth on this subject, most of which you can disregard for your application. The real test will come when you ride the bike for a significant length of time. You will almost certainly be making minute adjustments based on feel alone (bring a multitool/hex wrench with you). Just pay attention to your own comfort level. If you have it all the way back but there is undue pressure on your hands then you may need more setback to your seatpost. If the reach is too long then the issue is with the stem. If you notice knee pain during or excessive soreness after then you are indeed in the incorrect position (assuming seat height is correct). You very well may not encounter any of these issues on your hybrid. Those bikes are made with a wide range of positions/sizes in mind. My simple advice is: get it close enough and then go ride.