The 2.5" lift is just a key lift. Did it include a-arms to correct the camber and caster after the over crank?
The stock keys can already exceed the range for the ball joints and CV angles. That is why a max z-height adjustment is usually recommended.
There was one who lasted quite a while with the 2.5" crank. He has a blazer and eventually gave up on it to upgrade to SFA. Long term you may find it problematic and need to make another choice.
The key to 33" tires is the offset. Too much and you hit fenders. Too little rubs the frame and limits the turn radius. Cuts are a must. The rear wheel openings are only 31"