OP,

Find a qualified fitter or coach locally and build a relationship to achieve a good fit for yourself.

Optimal seat height is crucial and not "set... quite easily" or you would already be there. This is covered extensively in well documented fitting systems if you would care to research & do the calcs yourself and check your current set-up.

Good Questions to Ask any Fitter or Inter-web Guru:

How long have you been cycling, what disciplines have you been involved in?
Do you have any coaching certifications from national cycling associations?
What Fitting System will we be using?
How many riders have you fit professionally?
What results in competition did those riders achieve?
Have you worked with women cyclists?
Where can you get a good Breakfast Taco in San Antonio?

-Bandera