That's great advice. I like winning and developing a few players. I won't develop a uber star yet under my circumstances, but the salary limitations are a good reminder.
The salaries dont rise as fast as you might think, training an 18yo player for two seasons will take him from ~4k to max. 20k in the most cases - and those players are still affordable in your division. The numbers are just estimations, but as long as you develop your arena and raise the income from your home games you should never be short of money...