The cleanest, most highly modded gen 1s typically go for 5-6k.
It's hard to get what it's worth when it's not one of the most highly modded and even then, many of them sell the aftermarket parts then sell the bike separately with the OEM parts installed to get the bike's worth. Just in my area, Memphis Tn, the most you may get is 4k and on average, you'll get 2.8-3.5k offers. I say remove the growler, the windshield, rearsets, and damper. Of course, sell those parts on this forum, they'll go quickly. Replace them with OEM then sell the bike. You should get around 4.3-4.7k that way.
Growler - 150-200
GPR - 250-300
Rearsets - 100 150 (assuming they're not a major brand)
Windshield - Double bubble - 50
Just rough estimates on numbers. Could probably get 500-700 on your aftermarkets.