When I started working on bikes, I bought the Park AK-37 Tool Set, which is basic, but they call it their advanced set. I picked it up on ebay and was able to save some money that way. I have ended up using everything in the kit and adding quite a bit more - but some of it could be a bit redundant with what you have (the wrenches, screwdrivers, etc. and they aren't that great). Then, I added new tools as I needed them. However, I went into all of this knowing that I both wanted to work on our bikes (wife and mine) which ranged from 80s vintage to contemporary road bikes - and that I was interested in fixing up other bikes as I came across them. I think it was cheaper this way, but you could also price tools out individually to see, especially for the main ones you'll need.