You seem to be describing the Imagine Gold
HOB power filter.
If you're running the Imagine Gold HOB in addition to a canister filter that's properly sized for your tank and contains biological filter media ... you should be just fine in removing the HOB filter ... as the canister filter as well as all surfaces in your tank, will harbor beneficial bacteria.
If you're going to use Tetra Safe Start ... simply remove the HOB Imagine Gold before adding it. Again, the beneficial bacteria will colonize your subtrate, decor, canister filter media, etc.
Then, if you wanted additional filtration ... you could simply add another filter that is quieter down the road. All you'd have to do is install it, and within weeks it would be seeded with beneficial bacteria as well.
As far as the noise with the Imagine Gold HOB ... it could be the impeller. Or, if it's a 'sucking' sound ... it could be the built-in surface
skimmer adding to the noise.
Best of luck ... and Happy Holidays to everyone.