[Cory]

$6500 is not enough money to even consider purchasing machine tools.

I would purchase a small bandsaw, a small drill press, a small combo belt/disk sander a quality 1/2" chuck cordless drill (will be one of your most used tools. Don't skimp out on quality if you can afford it), and probably a cheap corded jigsaw and circular saw. Plus a full complement of screwdrivers, t-handle allen wrenches, l handle allen wrenches, straight allen wrench drivers, box/end wrenches, sockets/socket wrenches, pliers, vise grips, wire cutters/strippers/crimpers, drill bits, taps, etc. The list goes on and on. For a good start on the machinery the earlier referenced thread on the $1k/10k machine shop is a good resource.

You're going to want to purchase fasteners and other small parts that the kit inadequately supplies or doesn't include at all. You're going to need to build a crate. You're going to need to purchase t shirts, buy food/snacks for work sessions, potentially pay for a bus to/from events, etc. Maybe you qualify for championships at your regional and decide you want to go-there's $5,000 right there. There are literally endless ways that you will find to spend money down the road that are not easily seen in advance when thinking about what needs to be done to construct the robot.

In short, buy as many tools and supplies as you need to be able to build a robot competently and then save the rest for everything else that comes up sooner or later. Eventually if you still have a surplus you could start looking at adding machine tools such as a mill or lathe, but even then CNC is a big leap to take unless you really know what you're doing and are willing to put down a good chunk of money.