I’d be thinking more practically.
Saiga’s are good but the conversion can be very expensive all those parts. Non standard caliber magazines are hard to find sometimes and more expensive, 30 round AK mags are pretty cheap. .308 ammo is heavy and holds less rounds, reloading in a firefight sucks as does carrying that ammo around.
All in all I think you made the right choice.
Think…would you really be able to shoot back successfully at someone who is already zeroed in on you at 3 or 400 yards?
That would be impressive…have you the training or experience to do that? Could you even see the target?