serious advice. dont do either of them.my experiance with buying an established round is that as a beginer in the trade, the customers are used to a standard that you need to achieve through practise. yes it will launch you straight into earning, but you will struggle to keep up with the work rate at first. so expect to lose a few.
the other option i would not touch, a few claims you say they make like your round will grow by 10% in the first year. not a big claim, poor show i reckon any round will grow by far more than that without even trying through people seeing you working and asking you to do theirs.
my advice is, look at previous posts for the kit you need to buy, do your own house your families and friends houses, to get the practice. go knocking on doors it works, build a round and make it grow over the next few months within a year you will be doing very well.