Help me make a BEACH HOUSE mix... for a compition :)

Hello Beautiful Party People and DJs,

My name is Nu, I’m an upcoming female DJ from Egypt. I would like to ask for your opinions on a matter. I am entering a DJ competition where I am asked to submit a BEACH MIX and I need your help with advice.

Do I start that mix with an intro and build up from let’s say 120 BPM till 125 or start too slow? or shall I record the mix as if I am already in the peak hour of the beach party and start with a cool vocal tune at let’s say 120 BPM?

Second thing, shall I make an outro for my set? Like for instance play 2 cooled down tunes at the end?

Lastly, any song recommendations?

Your help is much appreciated!
xx
NU