Hi Birdteam and welcome to the forum. There's a lot of smart people on here ( I'm not one of them

I would start with 1.5" spacers. and keep original packaging in case you have to return them for 2" spacers.
I have a 2016 T4 LE and I bought factory beadlock wheels and 31 x 10 x 15 tires from a 2022 KRX. I didn't buy "spacers" I had to buy 4/137 to 4/156 lug nut bolt pattern wheel adapters. the 1st set was a 1 in. thick adapter, but when i installed them, the front wheels were up against the tie rod ends, so I returned them and got 1.5" thick adapters and they barely clear. My rear tires stick out about a half inch wider than my front tires do. I wish I put 2" thick wheel adapters on the front to make it even, but you have to look really close at it to tell a difference
before I got these wheels and tires, I installed a set of Hi Lifter offset A- Arms with a 2.5" lift. on both front and rear.
I was told by Brute Performance that 31" tires are about the biggest you can add without needing clutch work, they said it would have a slight loss of power, but not much, and I can barely tell a difference. they also told me that they sell a spring kit that would get most of the lost power back if I wanted to do that. I think it's $75
I really like the bigger tires and I will probably get the spring kit just to make it easier on the clutch. It seems to have plenty of power to climb steep hills.
I don't know what the offset of the KRX wheels are for sure but i think I read 6+2.