You want to go straight to Jelly Bean. Do this:
- Download the JB Bootloader; here or here. It can be anywhere on your virtual SD card.
- Download the JB Rom you want. If you want something close to stock, I'd suggest Bugless Beast; here or here. It can be anywhere on your virtual SD card.
- Boot into recovery. On stock, power the phone down, then hold volume up + down while then holding power. Wait for it to vibrate then release.
- Once in recovery, flash the JB Bootloader in whatever recovery you have. Clockwork I assume? Just use the install from sd option.
- Reboot your recovery; it might be under advanced.
- Create a Nandroid backup.
- Now to flash:
- Select mounts and storage; then format the System only.
- Back out to the main menu and select wipe data/factory reset. Now you're ready to flash.
- Select install zip from sd card; navigate to where ever you put it and install. If you flashed a Rom other than Bugless, you'll have to flash Gapps as well. Wait for it to finish then reboot.
You should boot up into Bugless Beast or whatever Rom you chose. First boot will take a while, be patient. Each boot should get quicker and quicker. Once booted, do the normal sign in and market restore and you should be good to go.