Lowering questions

[Slow black ss]

I bought Mcgaughy 2" coils for the front, bell tech flip kit for the rear (says it's 5")

So to be level I'm gonna trim a lil on the coil to get another 3/4-1" up front.

My questions start with what shocks do you guys recommend? Nitro drop 2s?
I currently have slammed1 shackles out back, will I need to put OEM shackles back on with the flip kit to get the 5"?
Last question, do I trim bumpstops or are there shorter replacements available?

Thanks