Firstly welcome.....
There are a lot of great answers and knowledge from people here with far more experience than myself.
I started my pen journey not that long ago with a proxxon mini lathe and it did a job, what I would say though is that I was a 'lapsed woodworker' and pens re-invigorated my desire, which also got me back into turning and meant I then got a larger lathe, so it could be another consideration before buying kit.... do you envisage wanting to turn other things once you get into it.... just a thought as we all spend too much on our hobbies 
Regards
Padster