I am trying to create a linear programming model that will find the optimal mix of bonds to sell that maximizes book yield, exceed a certain market value, do not fall below a certain gain/loss amount, and are limited to the maximum amount that is actually owned of the bond.

I am modeling the logarithm of wages for 154 employees. The predictors are a binary matrix, where the rows are employees, the columns are work competencies, and the intersection is either 1 or 0 (i.e., whether the employee has the competency or not).