Will you be capable of cutting your graphics on the same machine or will you have to cut on some existing equipment ??
While it's probably best to buy all of your essentials at the same time, to make sure they'll all work together, it's not necessary. There are plenty of things you can hand laminate by hand or even liquid laminate while you're getting your feet wet, learning the ins & outs of your printer, profiling and experimenting with media.
It's very easy for those who already have gone through the growing pains to just bark out what to do, how to do it and why to do it, without realizing..... money [
or lack thereof] gets in the way. If that was the case, I'd be telling you to look into a flatbed and skip all the unnecessary media. We're all at a stage and to make a true business person out of you, you'll learn how to cope with and without certain needed ingredients and still hand over a perfect product.
Good luck on the new toy.