You're on the right track, only issue I've had with bending is the pipe loses diameter on the bend, I wasn't 100% if it would've been fine but for £25 I got a pro to do it right and I fitted everything. I didn't want to buy pre bends and then have 100 joints in my system then one leaking.
It was likely due to my own incompetence in artistic things. I'm useless when something needs crafting.
Be mindful of the material you're using, stainless is expensive and it's a one shot deal to make a bend.
Also, make sure your flares are perfect and seal well before you put everything on the car!