Inner and outer requisites for sincere samatha/jhana/concentration attainment

Trying to understand what mental level and constitution the meditator needs to be to make actual progress towards the higher levels of concentration meditations, as well as the external conditions needed. Obviously a person cannot realistically gain traction while living a mundane householder life. So any personal advice, or sources or books/teachings regarding the matter would be appreciated. I did find a quote here that someone mentioned it could take 3-8 years of serious practice to gain any real attainments. This is obviously a "how long is a piece of string" scenario though the ability to practice with that much daily dedication and the requisite location is what I am asking. What persons constitution and what location is required for serious practice. Is a genuine teacher who can help with the immediate issues/pitfalls needed? Does one have to be in complete solitude etc? I do remember reading that Buddha gave 10 locations that would need to be avoided in attaining concentration. Which generally meant places where other people congregate.