Wiawis NS Limbs + Arrow Spine

First post here so first off hello to everyone :wave:

I am looking at getting some Wiawis NS Foam Limbs and have been looking at reviews around the net, from what I have read and understand these are on the faster side of limbs. Would it be best to move up a group on the Easton chart. Reason I ask is watching Jake Kaminski tune his setup up the arrows came out weak. I know I'm not as good or ever will be as good as him but I really don't want to buy an arrow I can't tune around the weight I want.

I went to my local shop yesterday and they were kind enough to let me shoot a few arrows, nothing was setup so it was just to get a feel of the reaction and draw weight as i'm moving up in weight.

With my new 40lb draw weight I would like to get a tune around that so I keep as much speed as possible in the setup.

My DL is 28.75" the Wiawis limbs were 36lb and measured 40lb OTF out of the box which felt good for me, the limbs I have at the moment are SF carbon elite 32lb (36OTF)

Will be looking at ACG's as my new arrows.

Appreciate any help.

I posted this on another forum so sorry if you read it twice :)