Is my timeline good?

I think the biggest concern is making sure you have enough time for photos. I see that you have an hour for cocktail hour, but since you aren't using a professional photographer my concern would be if that will be enough time. My advice would be to do as many photos before the wedding so that you don't go over time during cocktail hour. I also see that you mentioned the father/daughter, but is your fiancé having a dance with anyone?

I would be sure to get any agreements you have with your friends in writing, and just as a word of advice, save some money for a back-up plan because all too often something happens and those friendors fall through.

Depending on how religious of a ceremony/how many readings/etc you're having your ceremony may last anywhere from 15-30 minutes. If you can squeeze photos in before (a 1st look or at least most of your family ones) I would highly recommend planning for 2 hours minimum of photos before-hand with 15 minutes of free time for touch-ups before your ceremony begins.

Depending on how you're doing dinner (buffet/plated?) and how many people you have it takes an average of 45-60 minutes. When you do your grand entrance go straight to cutting the cake since everyone's eyes are already on you, and whoever will be portioning out your cake for guests can do that while people are going through the dinner line.

Are you doing any toasts? Those usually happen during the dinner hour, and afterwards I see a lot of couples go straight into their scheduled/honor dances.

So this is what I would personally recommend:

1P - Start photos. Getting ready shots/parent shots/first look

2:45p - Return to bridal suite/getting ready room for make-up touches

3p - Ceremony starts

3:30- Cocktail hour/Couple portraits (Cut out extended family photos. Literally nobody puts those on the wall or in an album so they're a waste of time)

4:30 - Grand entrance straight into cake cutting

4:45 - Dinner start (Couple, wedding party, and parents are the first to be served)

5:15 - Toasts if you're doing them

5:30 - Dances

5:45 - Open dance floor

8p - Final send off. Verify that your venue is okay with sparkler send offs. The venues I worked at had clauses prohibiting them because they're a huge liability.