Not really sure which parts you were planning on using from the TL1000, but you are probably best off finding the basic things you need from another FZR600. Less hassle, and it will get you "on the road" quicker (I quote, because I assume you can't yet ride at 15).
The parts of this bike were pretty consistent between the years they were made. Check out
motogrid.com to cross reference with parts that are usable from other years.
If you are going streetfighter, you have the benefit of not needing to put too much back on, but only get the forks back to spec, and then modify to taste.
Some of those side covers are very pricey, because it seems many people dropped them just like your PO. If you are patient, you will find some decent prices on here, as well as Craigslist and eBay.
In general, patience will be your best (and most frugal) friend.
Good luck, and look forward to following your progress.