the wolfram is the darling of the big power for subwoofers game right now and everyone who has bought one and is active on here or the FB pages seems to have high success rates with them, An alternative to that amp since its on preorder is the SoundQubed S1-2250.
https://soundqubed.com/product/s1-2250/ same price, but built in china. Id personally get the wolfram, but if you give the SQ amp good juice from the battery, itll blow you away. Also you could go with a slightly leeser sub for less cash and get these
https://store.soundsolutionsaudio.com/products/american-bass-xd-1244-12-inch-500w-rms-dvc-4-ohm-subwoofer.html for $87 each and put them in a good box. Also build your own box, even if it intimidates you. It will sound 1000x better than a prefab and save you a ton of cash. There are some prefabs you can get that are tuned to the correct frequency and theyll sound pretty damn decent, and if you go that way, you wont be upset, but there is more bass to be had in a custom box.
SSA has free shipping for orders over $100, so the 2 subs will fall into that category easily as well