Yikes, its been years since I've been active on here and I've completely forgotten about the hack me and King were working on. Since I was a different person when I agreed to working on the hack all those years ago; I'm gonna say I'm no longer involved with Gold's Adventure.
If King is still active then you might have to ask him for the consent to take over his thread but if you want to use its beta as a rom base for a hack of your own, go ahead. Just give King & me credit in the final product.(Nothing too fancy just a simple shout out in the game or just credited in the credits.) :)
EDIT: Actually I just went to view King's profile. Since its almost 2016 and King hasn't been back since March then as a former co-worker of Gold's Adventure, I give you the consent to take over the thread and to use Gold's Adventure's Rom Base. Whether you want to continue the game with your own ideas & inspirations (Which I 100% support if you do) or if you want to create a spin off/a hack of your own with GA's Rom Base; then you are 100% free to do so. Just give credit as mentioned before. ;)
Good luck and Happy Hacking! :D