Welcome Zukbrother and don't fret if response to your questions take more than a couple of hours. Most of these guys work or school all day. When I first posted on this board a few years ago...I came on a little too strong myself and got silence....These are some of the best wheelers in the sport but they don't let there 4x4 expertise go to there heads. We don't talk sh_t and we don't disrespect anyone no matter how newby the question. Suzuki 4x4s are great rigs with unlimited potential. Some of us have gone through all the other brands of 4x4s and are now DIEHARD ZUK FREAKS....we all have the EVIL SEED growing in our souls...
I also drive a sami, 8" SPOA, shackle reverse, on 33x11.50x15 True Tracs with a 1.3, Webber, header, 4:1 transfer. I dont drive 65 often because light Samis way up in the air with big tires are not all that stable...but they are fun to drive

The stock axles will get a lot of stress with 33s ( and the birfields ) especially with power steering ( if you have it ) If you dont have power steering 33s will be hell in the big rocks. Going up hill with 33s and stock 1.3 will be slow going...sometimes 2nd gear on long grades at elevation. I'll leave the gear questions to others more expert in that area. Welcome to the disease...Gary