You are the only person who can answer that. I am 5'2" in boots and 50kg or thereabouts, and I prefer horses 16hh upwards. I feel "underhorsed" on my main riding horse, a 15.1hh solid built gelding, despite the fact that I look just fine on him, and feel like I'm a much better fit for my 16hh narrow TB filly, even though she actually takes up less leg [she's nearly 100kg lighter than my gelding, despite the fact that she's nearly a hand taller]... I have only sat on her once due to her young age and the soundness issues she has had, but she's sound now and will be backed late Feb to early March, all going according to plan.
I can ride anything 13hh or taller [leg-wise, not weight wise, I could ride a Miniature weight-wise and be just fine!] but my personal preference is for bigger horses.