Complete Beginner (sherline cnc)

For years I have been into numerous hobbies where I end up creating
specialized parts. Recently I've gotten into R/C Helicopters and
found that there are a million parts that can be reproduced at home
that are far better than what comes in the original kit. The parts
that I create are very simple and created using tools such as hand
drills and dremels. I'm thinking of dropping some $$ on a Sherline
CNC mill and lathe so I can start creating some more advanced parts
out of better materials (i.e. aluminum). The reason I'd like to go
with a CNC setup is because I'd like to create a number of the same
part and then sell them to other R/C hobbyists.

OK.. So my questions.

Is it very difficult for a beginner to get into home machining?
(I've very mechanically and technically skilled - I'm a software
engineer by trade)

Is going with the Sherline CNC Mill and Lathe a good choice?

Am I crazy with this idea?

Thanks in advance for you help.

Rob