Welcome, first of all you don't say where you are located. If we know where you are, you will get more information about the availability of legacy glass in your area.
If you are in Europe for example, you might find the exchange rate makes it feasible to buy from the US.
You won't be disappointed with the camera and the lenses are the best kit lenses for any system probably. Keep track of what focal lengths you use most often and when you are ready you can look around for a prime or two in those focal lengths.
You don't need a huge amount of lenses to take great photos. Many of the members here have large lens collections because they are collectors, or because they use different lenses for different artistic styles. I'm sure there are many more reasons but those are probably the more popular reasons.
Even people who's job is also photography don't need that many to do their job.
Your dedication is important as well, as you stated, you have drifted in and out. You've ordered probably the best value kit around, you would have spent a lot more on Canon and Nikon. If you find again that photography isn't for you, you can sell it and you won't have lost as much.