Let \( f: \mathbb{R} - \{ 0 \} \to \mathbb{R} \) be a function such that \( f(x) - 6 f\!\left( \frac{1}{x} \right) = \frac{35}{3x} - \frac{5}{2} \). If the \( \lim_{x \to 0} \left( \frac{1}{\alpha x} + f(x) \right) = \beta \) ; \( \alpha, \beta \in \mathbb{R} \), then \( \alpha + 2\beta \) is equal to:
