Model 12FVSS....Stock...Chassis....DBM?

Going through the process of trying to decide on a stock vs. chassis with my 12FVSS .223!!!!!??????? Originally wanted a MDT Tac21 but the scope base does not mount on the action so to me, that is out.

If I go with a stock, I would like to add a DBM. I have ordered a "Frame Assy, Short SS NBR (DBM)" part# 107325. I think this would basically make my 12FVSS into a 12FCVSS. Is that correct? I think I can drop the "F" because that is a synthetic stock. The "SS" part is stainless steel which should not matter. The "C" and "V" would be important if ordering a stock.......So........is my thought process correct?

If I go chassis, it looks like most chassis have DBM capability built in.......correct? I've also been looking at the MDT HS3; looks like they will be available this spring; with a Magpul PRS.

Decisions......Decisions........any advice would be greatly appreciated!