Don't under-estimate the chair!
As for the monkey-mind try doing something to help tie you to your meditation subject until the monkey-mind subsides a little... try counting the breaths, marking them 'in' and 'out', or using a 'buddho' mantra or something.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"Whether I were to preach in brief, Sāriputta, or whether I were to preach in detail, Sāriputta, or whether I were to preach both in brief or in detail, Sāriputta, rare are those who understand." (A I 333, Sāriputtasutta)