i wouldnt even go new. buy a used bike, if you find a sport bike for a good deal, buy it. even an old honda f4. but a cruiser would be much better choice for a starter bike.
this is my motorcycle history, started when i was 18/19.
first bike was a 1985 gsxr 750 ($2500)
second bike was a 2002 yamaha r6 ($9000)
third bike i was turning into a track bike, 1999 yamaha r6 ($1500). i ended up selling this bike part way through the build, just didnt have the money to complete the bike
my 4th bike was a 1999 yamaha r1 ($6000), in some ways it was almost like i was going backwards from a 2002 r6, to another yamaha that is 3 years older and 10x the mileage on the bike.
my 5th and current bike, 2009 ktm 690 smc (11k)
my 6th and also current bike, race only. 2006 ktm 450 smr ($5500)
now if that wasnt a trip down memory lane, i dont know what is.