If you don't need the extra income overnight , ie change in your expenses or taking on staff then personally i would keep your money
an underpriced traditional round sounds like more work than its worth especially when your paying good money for it
You could canvass up 3/4 days work in a few months and save your money
Ive bought rounds and given up on it, i bought ladder work and it was underpriced , i bought wfp work which is probably the best you will buy and had loads move out etc and lost money .... id rather grow at my own pace now ..
Only you know if its worth it at the end of the day ,, if you are desperate to buy id try find well priced wfp work if i was you
Also you said you cant be bothered with the first cleans etc but a trad round is gonna feel like a round full of first cleans when you change over
all the best whatever you do