How long should i allow for getting ready

Are you doing it yourself or getting someone to do it for you? If someone is doing it for you then you could get them to estimate how much time it would take since that would be more accurate

The stylist I spoke to said anticipate 2 - 2 1/2 hours just for hair and make up.
So the big picture is probably 3 - 3 1/2 Hours.
Which seems right. When I have time to get ready for a big event I probably take close to 2 - 2 1/2 hours to get ready.
Since we’re doing a sunrise wedding, I’m guessing my morning will start around 430 am. Our wedding isn’t until October, but I’ve started practicing my hair and makeup on my own if I decide not to hire someone.

I agree with Melle, if you're getting your hair done by a professional, they should be able to give you an estimate of how long the work will take to complete.

My stylist gave me the timeline for getting ready.

I planned on 1 hour to have my hair professionally done and 1 hour for my makeup to be done, then 45 minutes per service for bridesmaids & moms.