Newbit on my first truck build. I've restored other cars this is my first 68 truck

[68SWBChevy]

Hey guys and gals. Just found this forum and looks like it might have some information that I am looking for. I bought a 68 SWB factory A\C cab truck, has PS\PB automatic on the column. Pretty nice truck needs rockers and maybe some floor pans but that's about it. I put a new front clip on it all ready with a cowl induction hood. Planning on putting a stroked out SMB 400 to make a nice driver and it will be show quality by the time I'm done years down the road. My question is I want to lower it maybe around 3 inches in the front and 4 in the rear but don't want to kill the ride quality. I want to convert the front drums to disc, any suggestions as to a kit I can buy or use or another kind of truck I get get these components off of it. I will have many questions along the way since this is my first C-10 and would certainly appreciate the advise and help point me the right direction down the long road I am going to be on! Thanks, James in Dallas Texas