Best way to lower rear for 69 C10 with leafs?

[Arl37]

For Christmas I treated my self to a front disc brake conversion kit from Parts Online. I opted for 2 1/2" drop spindles. Got it all done and truck has too much rake for me. ( See below photo). Level of truck was OK before I just l didn't realize how much of a drop I would have with 2 1/2" spindles.
Truck has new 6 leaf springs from SD Springs. Shackles are already extended so I cant gain anything with longer shackles. Had to put longer ones in just to get it level with new SD Springs before the drop axles in the front.
Trying to figure out most economical way to lower rear. Alternatives I come up with are:
1. Flip Kit to get leafs below axle. Would probably give me 5 inches but from what I read I would have to install C Notches and i really don't want to do that.
2. Drop Springs but I sure hate to toss those new SD Springs.
3. Go back to stock height spindles in the front. Probably have to buy new ones as I'm pretty sure bearings, ball joints and tire rod ends from the Parts Online kit wont fit my old stock spindles.

Any thoughts on this would be appreciated
Thanks