If it gives you bugs and issues in the near future you will not be able to restore to 8.1 and JB.
You'd be stuck on stock ios waiting.
If you want to cut corners, do it the fast and easy way and take the risk its up to you.
Not recommended though.
It works.. but you will likely run into problems later. Good luck with that.. it saved you maybe 15 minutes now, but may cost you your jailbreak in the near future.