Man 150,000 is more than enough to put together a studio. I really wouldn't suggest a specific recording program to you because, everyone can feel comfortable on different things. I know a guy that owns almost every recording software that you can name, but he still uses fruityloops because he's comfortable with it. And he knows FL up and down. He can tell you everything you'dd want to know in FL. And, the sound that he gets out of FL sounds better and some peoples sound in protools, nuendo, logic, etc.
The only thing I WOULD suggest is, make to sure that he doesn't just buy stuff because of the pricetag. Tell him to buy some QUALITY equipment.
And tell him don't neglect to buy sound treatment products. There is a whole lot of equipment that is needed to buy besides just a computer, software, and keyboards.
I Hope This Helps!
Holla
CATRON/TheReturn