I'd be really careful about this. 1 hour travel time for that route is very optimistic and only for the very best of driving conditions. I'm in the Tampa area (St. Pete) and have an annual pass, so I make this drive all the time - sometimes it's just an hour and 15 minutes from when I pass the airport exit to when I go through the gates at Disney (keep in mind that you still have to build in time for parking, the tram up to the park, getting your ticket, etc, which can be another 15-30 minutes right up front), but sometimes, if there's been an accident anywhere along the route, the time can easily jump up to closer to 2 hours. And if you're going through Tampa during anything even close to rush hour on a weekday, additional time is essentially guaranteed. The roads can also get really backed up just trying to leave the parks in the late afternoon/evening. I would plan to be on the road no less than 4 hours before your flight time. Tampa's a fairly simple airport, but you still have to turn in the rental vehicle (including stopping to fill up the gas, typically), take the short train shuttle between the main building and the separate terminals, and you have to leave enough time for security and boarding, etc.
If your interview is the day before and you can leave early and be at the parks at Rope Drop, then you can still make a great morning out of it and head back when you need to. But if it's a morning interview that day and then you still have to change into park clothes, make the drive to the parks, spend only a couple hours in the park, drive back to the airport, get gas, turn in the rental vehicle, possibly change again into something more comfortable / less sweated on for the flight, check luggage, get through security, and get to your terminal before boarding starts 30 minutes prior to the flight time, you might not have as much time left to stay in the park as you would like.
I would suggest seeing how your plan would work with 2 hour drive times each way as a starting point, and see if it's worth it to you then.