Olivet is beautiful! I love the J in Julia coming after this name. Some other J names:
Olivet Julie
Olivet Jessamy
Olivet Jora
Olivet Josie, Josephine
Olivet Jemma
Olivet Jana
Some other ideas:
Olivet Winry
Olivet Roselore
Olivet Roselil
Olivet Rosa 
Olivet Rosamel
Olivet Roseanne
Olivet Rosina
Olivet Dorothy
Olivet Marianne
Olivet Genevieve (maybe a J sound, but without the initials OJ)
Olivet Gemma
Olivet Georgia, Georgina