Do I just pooch myself?

Ok, so I've read until my head hurts. So please take pity on me if there is a thread that answer this question already. Please direct me if that's the case...
On to my problem.

I was running Optimal Rom 13-1 just fine minus the Samsung bluetooth glitch. But since There have been updates to that ROM since, I figured I'd update to 15-5.
I followed these instructions.
1. Download and install NI2Flasher.apk
2. Download and copy G900V_*_Stock_KERNEL_SafeStrap-Flashable.zip to sdcard.
3. Run NI2Flasher and select flash.
4. Grant root access for NI2flasher
5. After the app flashes the NI2 kernel tap the reboot button.
----This will reboot your device directly to Safestrap.
6. BACKUP YOUR CURRENT ROM!!!
7. Flash OptimalROM_*_BigBot96.zip
7. Do NOT forget to flash the G900V_*_Stock_KERNEL_SafeStrap-Flashable.zip afterwards.
----If you do forget you can always select recovery at the Safestrap splash screen.
8. Reboot system after flashing kernel

I chose the G900V_OG5_Stock_KERNEL_SafeStrap-Flashable.zip MD5: 0c1a06d1358cdfd19513043ee370dac1 file.
I am now in 15-5 Optimal ROM without Root and no ODIN access.

Phone seems glitchy which makes things worse. Play store FC's.
Cant install BusyBox. Im sure there's more.

Please assist as I am frustrated at this point.

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