My Lowered 74 LONG BED, and Front End Lowering Questions

[74Chevy74]

Okay here is a pic of my truck. I scored it for free a couple weeks ago and since then I did a flip kit, spindles and springs up front. I'm supposed to be getting a sponsored bag job soon so we'll see. I want to get the truck to lay as low as possible, what are the pro's and cons of the crossmember drop? I have seen the 1 1/2" crossmember drop, and I have seen the Z Section of the whole front frame? I'm just trying to figure out the best way, and of course the cheapest. Does anyone know what Fat Man Fab sells? Anyone who has expierience with anyone of these let me know. I know this has been a frequent post but I want to find out all the info I can. I'd like the truck to lay frame/pinch weld if possible. Has anyone modified the stock gas tank by shortening it, or does everyone run the blazer tanks? What's better??? Thanks for any input.