The starter kit (assuming that we're talking about the official one) is SUPERB; It's a tour-de-force in teaching so many things with what seem to be silly (but are actually very powerful) examples. For me, a defining hallmark of Arduino was "I thought it was going to be hard ... until I discovered just how easy most things are"; so rather than "give you a fish and feed you for a day" it very much "teaches you how to fish and allows you to feed yourself for a lifetime" ... so a bit more work, but an incredibly rewarding journey.
So regardless of whether it helps with your specific project, there's tremendous value in getting the starter kit anyway.
I think if you take a week or two to get the kit and work through the examples that interest you you'll come back here a changed person; you'll probably still have the training wheels on the bike - but at least you'll be riding the bike - and it'll help you relate no end to advice that all the other bike riders give; and there are some hellishly good bike riders here. There are also some hellishly cheap bikes that people can buy from some sources. At the end of the day if just comes down to gaining hard-earned experience; it's a wonderful journey if you enjoy that kind of thing (and obviously many of us do). Probably the biggest danger is that you start finding more and more things to do with Arduino and end up falling down the rabbit hole (I've already made an electric blanket controller, grip heater controller for my motorbike, got an Arduino to pop in an 8 digit random number at the cursor position at the press of a switch ... with more projects in the pipeline ... and I've only been into it for a few months!)