Brand Opinions or facts.

Hey everyone. I am new here, I just retired from being a firefighter after25 years do to medical reasons. 

I am still way to young to officially "retire" and collect anything.

So I am wanting to start my own land clearing business, However I see the prices on equipment are way to obtainable for me as a start up. But I do have one question about tract loaders/skidsteers

I know every video I was they all have a tract loader. But is there any chance buying a used skidsteer with tires could help start this business at wayless of a start up cost? 

Maybe not use it for mulching but maybe do some brush hogging with it?

the second part is to try to make money with something that wont hurt my back so bad and to get the capital to start this  business my brother was thinking of a mowing business. Not landscaping but just mowing. 

Bad boy mowers has very good pricing. I have seen reviews on youtube but many them are paid to say so.

Anyone have experience with bad boy mowers? what are some good things some bad things. What brands  do you feel they are better than?