Where you mention the OP abilities, that Isn't possible anymore due to a security feature Roblox added. Good places to get scripts would be or (you need an account to access v3rmillion) It is the most powerful, has support for all scripts (except for SS scripts), and is undetected 90% of the time (only detected during a ban wave until the devs fix it). The only paid exploit you should ever get is Synapse X ($20 Paypal, $15 BTC). Will probably be fixed in their next update. However, They are slightly broken due to the ban wave.
Oxygen U | 2 Checkpoint key system | Best free alternative to krnl.
Krnl | 5 Checkpoint key system | can run almost every script.While JJsploit has an easy to use UI and has no key system, It is pretty weak.