4x4 or not

im thinking of turning my craftsmen into 4x4 using a transaxle on the front with 2 slip yolks from a turbo 350 transmission welded on the axles so i can steer if anyone has any other ideas on what i should do please help. im open to all ideas.

here is a walk around of my mower

Most common idea is to use a rear steer transaxle, but I don't now how you run a belt for it. and you cant flex the front end D:

i have a few ideas on suspension that i want to try and the belt for it i am still trying to figure that one out

I honestly would rather keep it 2wd with a locked transaxle. More of a fun challenge offroad in 2wd. Also staying 2wd will keep the tractor lighter and less things to break. Just my opinion. 

Here is an older pic of someone who did what you're attempting. Steering was articulation rather than traditional steering, (to a point). 4wd, matched transaxles... even a bbq fitted to the front lol ... it worked pretty well, but he had a lot of problems with the front shift linkages binding.

Are you kidding??? If you're prepared to do the tremendous amount of fabricating, then go for it! I've seen very few homemade 4wd tractors.
I'd love to do one myself but I don't have the funds.