Great idea.  A-4 would equal 25.5* and might be competition for my #5 Hybrid.

I have my 24 set on D3 and my 27 set on B3 (24.75 and 28.5*) but there might be 5-7 yards difference, IF THAT.  I can crush my 27 but don't hit the 24 quite as well.

I have an old Warbird Divine 9.  Not the world's easiest to hit because the lie angle is almost 2* flatter than my 910F 19* (I have it set at B3) but when I hit it well, it goes 10 yards farther than the 24H.  A 7-24 Tight Lies would actually fulfill the 9 wood requirement but it would be better to have a Titleist 9 wood. (what I do for my 170 shot is hit a fully choked down 910F).

Hmm. Replace the 5I with a 27H, replace the 24H with the 24F dialed to 23.25, replace the 21F/17F and get a 19F.  Should give me good gaps and then I could use all my FWs in the FW.  The 17F is pretty much a tee choice to driver.  That could work.

That sounds like quite the setup.   I'd probably dial the 24F to C3 or possibly B3.  C2 (23.25) is a fade ball flight.   I'd then chuck the 24H (it just doesn't have the "knock the snot out of it" feeling that my 19F and 27H do).  

Currently the only one offering a 9 wood is TM; only avail in RH (flexes are R and senior).