It takes me roughly 40-50 hours to complete a season, normally 3/4 days, but I spend my time scouting, tweaking things, looking up history, negotiating bargains, lowering wage bill, organising things, finding better feeder clubs. and it pays off.
In my sheffield wednesday save, I found some wonderkid (regen) called Kaddouri, got him for free, just a season later being offered £28,000,000 for him.
Also got Papadouplos for 2.5m plus so random defender i have with **** star potential, which is a steal in my eyes. So it's worth the time, scouting, negotiating. And not rushing through.