Gearbox 2007 DIY?

Suzuki jimmy gearbox DIY?

Hey fellas, I have a 2007 jimmy and the gearbox has crapped out, it's a known issue that the bearings go in them. I'm in New Zealand and a replacement unknown gearbox will cost me 3.5k + fitting, way too much for the value of the vehicle. It's all out currently I told mechanic to not go ahead when he told me the price of a replacement, said reconditioning would cost more. I'm pretty good mechanically and have a good shed, I see you can get a gearbox bearing replacement kit off ebay for $450. If I get a cheap press do you guys think a Slightly advanced chap would be able to do this? Or no go, don't even try?