just make sure that 4 times the income is worth 4 times the greif.
make yourself the spare driver as its bad enough sorting your own crap out than trying to sort someone elses when your still driving.
i worked for a nfl subby here who had 4 trucks.typical scenario subbing over here just a busy poor man taking into account the financial outlays.
if you smoked,or religously bigoted,or just not the right format,then you never got a job.
3 years later,he has 25 units,about 50 drivers who did nothing but girn and bellyache ringing him up 24/7 and wiping out weeks of profit at a time with damage and accidents.
he pulled the pin,paid everyone off,and went back to 3 trucks with 3 of us driving them alone,plus a cpl of spare drivers.
i say that would be a normal example.