85 K10 lift questions

[Kryptonite]

Traded for my truck about a month ago, Afterwords Noticed that the front lift had been done using Square tubing and not actual blocks. Also Noticed had alot of play where front driveshaft slides into yoke.

I have found a place to add leafs and arch my springs but i would appreciate some input on how much lift i can go for before modifying my steering and or lowering the trans case. Sadly i will have to remove lift for now due to unsafe and also have to save up to have drive shafts lengthened. I would just really like to do it right the first time. Unlike the last person.