Leveling rear with added weight

Hello all,

I have a 2017 crew cab 4WD Tacoma and I recently added a Decked system to it. It's amazing and I love it, but it definitely added some weight/sag to the rear end especially full of tools and mountain bikes. I want to raise the rear back up and add some towing capacity as I pull a trailer from time to time. So my question is, while I have someone installing an add a leaf to the rear, do I go ahead and do the 5100 Bilstein's on the front and rear? I don't really want to lift the truck, but I would enjoy it to be leveled and have better handling and ride. Will these items get me what I'm looking for: Cheers, sorry if this has been answered, I looked around and think this is what I found I want to do, but an expert on here confirming would set my mind (and wallet) at ease.