Looking to special order a set of 712 MB Irons 4-pw with KBS Tour X-flex shafts softstepped once and bct cord grips -- is a swingweight of D1 achievable with this combo?  without specifying swingweight in my order what would this combination generally swingweight out to? 

also thinking about adding a 712U 4i and sm4 50.08 (@ 51*) to this order also with KBS tour X (softstepped in the 712u), again is it possible to get the 712u to a swingweight of d1 with this combination?  what would the the swingweight of the vokey sm4 with the kbs tour X? looking for something in the D3 range (going with D5 in my 55 and 60 degree wedges).

thanks in advance for your expertise.