I have 2 locations where I can put my plumeria plant but I can't decide....

Spot A : Gets full, direct, beaming [ Southern California ] sunlight from 1pm - 5pm ( Summer ) and a wall just blocks out the sun for the rest of the day.

Spot B : Gets, for the most part, full sun light from 1:30 - 5pm and slight shade from 5 - 7pm ( Summer ) But there are many trees growing and fences around it that will cause some shade especially after 5pm when the sun goes behind trees ( not SOOOOO strong of a shade, but it's still noticeable since the leaves on the plumeria is very broad.

So to sum the confusing question up

A: 1 - 5pm of 100% direct sun or B: 1:30 - 7pm of 75% sun and 50% after 5pm

( Oh and Location 'A' has many succulents growing and flowering. Does this mean that it should be great for my Plumeria to be placed there? )

Would it make a big difference with the locations I choose?

Thank you