3 seat helicopter
Whilst you can buy a 3 seat helicopter it's not easy getting three people in it and having the power to get past the end of your garden. Enstroms, Schweizer 300's are great but space is limited and so will be power to carry 3 people especially on a hot day. Unfortunately 150k is not a great deal of money when talking helicopters.
Forget the 3 place idea and plan on a heli just for two. If you don't like Robbo's then it's one of the above.