Recently I purchased a p-1sc supercharger and a 258MM 3400 stall from circle d. Wanting to do a cam package also and was looking at the 224/228 114lsa from TSP.

Trying to buy this today so I can start throwing everything in next week and just wanted to see if this is a good choice before I buy it.

Also wanted to verify that the pushrods I would need for stock 5.3 would be 7.4"

 

That cam will be better than stock and will work good with the blower/stall.
What gears are you running?

7.4s "should" work, using "should" loosely. Never hurts to check before hand.

 

Yea, I am going to get the pushrod length checker as well to verify the length.

Truck currently has stock 3.73 gears.