Your different bumper may not add to your premium (unless they count it as a kit)
The alloys are HIGHLY likely to add to your premium.
The lowering WILL add to your premium.
The induction kit WILL add to your premium.
Anything you have done to your car which alters the appearance or the performance, needs to be declared to the insurance company. Come time to make a claim, if they find one thing you have changed and not declared, they can simply declare your insurance null and void. No payout for you, lawsuit from any third parties and possible action by the police for driving without proper insurance.
None of these things may happen however at the very least your insurance company will add the mods onto your policy, increase your excess and premium accordingly and expect you to pay it all (backdated to the start of you policy).
It is not worth it. Declare the mods or take them off.