I don't think signing Stroman should deter them from trading for Cease. Someone posted the rotation with the last couple pages and he can definitely bump Clarke Schmidt to the pen. Might be better to add Cease and Stroman than just signing Snell.
Plus, Rodon is no picture of health and Cortes missed time last year.
Possible that they shop for a cheaper option controlled beyond 1 year and deal Q's 1 year salary. His salary isn't high but they could save a little bit by doing that.